uu.seUppsala University Publications
Change search
Refine search result
1 - 47 of 47
CiteExportLink to result list
Permanent link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Rows per page
  • 5
  • 10
  • 20
  • 50
  • 100
  • 250
Sort
  • Standard (Relevance)
  • Author A-Ö
  • Author Ö-A
  • Title A-Ö
  • Title Ö-A
  • Publication type A-Ö
  • Publication type Ö-A
  • Issued (Oldest first)
  • Issued (Newest first)
  • Created (Oldest first)
  • Created (Newest first)
  • Last updated (Oldest first)
  • Last updated (Newest first)
  • Disputation date (earliest first)
  • Disputation date (latest first)
  • Standard (Relevance)
  • Author A-Ö
  • Author Ö-A
  • Title A-Ö
  • Title Ö-A
  • Publication type A-Ö
  • Publication type Ö-A
  • Issued (Oldest first)
  • Issued (Newest first)
  • Created (Oldest first)
  • Created (Newest first)
  • Last updated (Oldest first)
  • Last updated (Newest first)
  • Disputation date (earliest first)
  • Disputation date (latest first)
Select
The maximal number of hits you can export is 250. When you want to export more records please use the Create feeds function.
  • 1. Abu.samha, M.
    et al.
    Börve, K. J.
    Saethre, L. J.
    Öhrwall, Gunnar
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Bergersen, Henrik
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Rander, Torbjörn
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Björneholm, Olle
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Tchaplyguine, Maxim
    Lineshapes in carbon 1s photoelectron spectra of methanol clusters2006In: Physical Chemistry Chemical Physics, Vol. 21, p. 2473-Article in journal (Refereed)
  • 2.
    Baltzer, P
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics.
    Karlsson, L
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics.
    Wannberg, B
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics.
    Öhrwall, G
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics.
    Holland, DMP
    MacDonald, MA
    Hayes, MA
    von, Niessen W
    An experimental and theoretical study of the valence shell photoelectron spectrum of the benzene molecule1997In: CHEMICAL PHYSICS, ISSN 0301-0104, Vol. 224, no 1, p. 95-119Article in journal (Other scientific)
    Abstract [en]

    The photoelectron spectrum of benzene has been studied using HeI and synchrotron radiation for the ionisation. The study involves all main bands associated with the single-hole valence states, as well as satellite structure observed in both the outer and

  • 3. Barth, S.
    et al.
    Joshi, S.
    Marburger, S.
    Ulrich, V.
    Lindblad, Andreas
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Öhrwall, Gunnar
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Björneholm, Olle
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Hergenhahn, U.
    Observation of resonant interatomic coulombic decay in Ne clusters2005In: J. Chem. Phys., Vol. 122, p. 241102-Article in journal (Refereed)
  • 4.
    Bergersen, Henrik
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Abu-samha, M.
    Lindblad, Andreas
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Marinho, Ricardo
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Céolin, Denis
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics.
    Öhrwall, Gunnar
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Sæthre, L. J.
    Tchaplyguine, M.
    Børve, K. J.
    Svensson, Svante
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Björneholm, Olle
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics.
    First observation of vibrations in core-level photoelectron spectra of free neutral molecular clusters2006In: Chemical Physics Letters, ISSN 0009-2614, E-ISSN 1873-4448, Vol. 429, no 1-3, p. 109-113Article in journal (Refereed)
    Abstract [en]

    Core-level photoelectron spectra of free neutral methane clusters have been recorded. These spectra exhibit well-resolved surface and bulk features as well as vibrational fine structure. The vibrational structure in the cluster signal is well reproduced by a theoretical model that assumes independent contributions from inter- and intramolecular modes. The intramolecular contribution to the vibrational line-shape is taken to be equal to that of the monomer in the gas phase, while the intermolecular part is simplified to line broadening. An estimate of the cluster size has been made on the basis of the observed surface-to-bulk intensity ratio.

  • 5.
    Bergersen, Henrik
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics.
    Abu-samha, M.
    Lindblad, Andreas
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics.
    Marinho, Ricardo
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics.
    Öhrwall, Gunnar
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics.
    Tchaplyguine, M.
    Børve, K. J.
    Svensson, Svante
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics.
    Björneholm, Olle
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics.
    Two size regimes of methanol clusters produced by adiabatic expansion2006In: Journal of Chemical Physics, ISSN 0021-9606, E-ISSN 1089-7690, Vol. 125, no 18, p. 184303-Article in journal (Refereed)
    Abstract [en]

    Free neutral methanol clusters produced by adiabatic expansion have been studied by photoelectron spectroscopy and line shape modeling. The results show that clusters belonging to two distinct size regimes can be produced by changing the expansion conditions. While the larger size regime can be well described by line shapes calculated for clusters consisting of hundreds of molecules, the smaller size regime corresponds to methanol oligomers, predominantly of cyclic structure. There is little contribution from dimers to the spectra.

  • 6.
    Bergersen, Henrik
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Marinho, R. R. T.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics.
    Pokapanich, Wandared
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Björneholm, Olle
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V. Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Molecular and condensed matter physics.
    Sæthre, L. J.
    Department of Chemistry, University of Bergen.
    Lindblad, Andreas
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Öhrwall, Gunnar
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    A photoelectron spectroscopic study of aqueous tetrabutylammonium iodide2007In: Journal of Physics: Condensed Matter, ISSN 0953-8984, E-ISSN 1361-648X, Vol. 19, no 32, p. 326101-Article in journal (Refereed)
    Abstract [en]

    Photoelectron spectra of tetrabutylammonium iodide (TBAI) dissolved in water have been recorded using a novel experimental set-up, which enables photoelectron spectroscopy of volatile liquids. The set-up is described in detail. Ionization energies are reported for I 5p, I 4d, C 1s and N 1s. The C 1s spectrum shows evidence of inelastic scattering of the photoelectrons, that differs from the case of TBAI in formamide.

  • 7.
    Burmeister, Florian
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics and Materials Science, Physics II. Physics V.
    Andersson, L. M.
    Öhrwall, Gunnar
    Department of Physics. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics and Materials Science, Physics II. Physics V.
    Richter, T.
    Zimmermann, P.
    Godehusen, K.
    Martins, M.
    Karlsson, H. O.
    Sorensen, S. L
    Björneholm, Olle
    Department of Physics. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics and Materials Science, Physics II. Physics V.
    Feifel, Reimund
    Wiesner, Karoline
    Goscinsky, O.
    Karlsson, Leif
    Department of Physics. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics and Materials Science, Physics II. Physics V.
    Svensson, Svante
    Department of Physics. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics and Materials Science, Physics II. Physics V.
    Yencha, A.
    PES/TPES comparative study of the inner-valence ionization region in HCl and DCl2004In: Journal of Physics B, Vol. 37, p. 1173-Article in journal (Refereed)
  • 8. da Silva, D. A.
    et al.
    Filho, R.
    Coropceanu, V.
    Öhrwall, Gunnar
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Osikowicz, W.
    Suess, C
    Sorensen, S. L.
    Svensson, Svante
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Salaneck, W. R.
    Bredas, J. -L.
    Vibronic coupling in the ground and excited states of the naphthalene cation2004In: Chemical Communications, Vol. 15, p. 1702-Article in journal (Refereed)
  • 9. de Jong, M. P.
    et al.
    Friedlein, R.
    Sorensen, S. L.
    Öhrwall, Gunnar
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Osikowicz, W.
    Tengsted, T.
    Jönsson, S. K. M
    Fahlman, M.
    Salaneck, W. R.
    Orbital specific dynamic charge transfer from Fe(II)-tetraphenylporphyrin molecules to molybdenum disulfide substrates2005In: Phys. Rev. B, Vol. 72, p. 035448-Article in journal (Refereed)
  • 10.
    Feifel, Raimund
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics and Materials Science, Physics V. Physics II.
    Andersson, M.
    Öhrwall, Gunnar
    Department of Physics. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics and Materials Science, Physics V. Physics II.
    Sorensen, S. L.
    Piancastelli, Maria-Novella
    Department of Physics. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics and Materials Science, Physics V. Physics II.
    Björneholm, Olle
    Department of Physics. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics and Materials Science, Physics V. Physics II.
    Karlsson, Leif
    Department of Physics. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics and Materials Science, Physics V. Physics II.
    Svensson, Svante
    Department of Physics. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics and Materials Science, Physics V. Physics II.
    A quantitative analysis of the N 1s ­> p* photoabsorption profile in N2: new spectroscopic constants for the core-excited state2004In: Chemical Physics Letters, Vol. 383, no 3-4, p. 222-229Article in journal (Refereed)
  • 11.
    Feifel, Raimund
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics and Materials Science, Physics V. Physics II.
    Baev, A.
    Gelmukhanov, F.
    Ågren, H.
    Andersson, M.
    Öhrwall, Gunnar
    Department of Physics. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics and Materials Science, Physics V. Physics II.
    Piancastelli, Maria-Novella
    Department of Physics. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics and Materials Science, Physics V. Physics II.
    Miron, C.
    Sorensen, S. L.
    Naves de Brito, A.
    Björneholm, Olle
    Department of Physics. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics and Materials Science, Physics V. Physics II.
    Karlsson, Leif
    Department of Physics. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics and Materials Science, Physics V. Physics II.
    Svensson, Svante
    Department of Physics. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics and Materials Science, Physics V. Physics II.
    Role of stray light in the formation of high-resolution resonant photoelectron spectra: An experimental an theoretical study2004In: Journal of Electron Spectroscopy Relat. Phenom., Vol. 134, no 1, p. 49-Article in journal (Refereed)
  • 12.
    Feifel, Raimund
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics and Materials Science, Physics V. Physics II.
    Baev, A.
    Gelmukhanov, Faris
    Ågren, Hans
    Piancastelli, Maria-Novella
    Department of Physics. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics and Materials Science, Physics V. Physics II.
    Andersson, M.
    Öhrwall, Gunnar
    Department of Physics. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics and Materials Science, Physics V. Physics II.
    Miron, C.
    Sorensen, S. L.
    Naves de Brito, A.
    Björneholm, Olle
    Department of Physics. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics and Materials Science, Physics V. Physics II.
    Karlsson, Leif
    Department of Physics. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics and Materials Science, Physics V. Physics II.
    Svensson, Svante
    Department of Physics. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics and Materials Science, Physics V. Physics II.
    Generalization of the duration time concept for interpreting high resolution resonant photoemission spectra2004In: Physical Review A, Vol. 69, p. 022707-Article in journal (Refereed)
  • 13.
    Feifel, Raimund
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics and Materials Science, Physics V. Physics II.
    Kimberg, V.
    Baev, A.
    Gel´mukhanov, Faris
    Ågren, Hans
    Miron, C.
    Öhrwall, Gunnar
    Department of Physics. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics and Materials Science, Physics V. Physics II.
    Piancastelli, Maria Novella
    Department of Physics. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics and Materials Science, Physics V. Physics II.
    Sorensen, Stacey
    Karlsson, Leif
    Department of Physics. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics and Materials Science, Physics V. Physics II.
    Svensson, Svante
    Department of Physics. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics and Materials Science, Physics V. Physics II.
    Profile of Resonant Photoelectron Spectra versus the Spectral Function Width and Photon Frequency Detuning2004In: Physical Review, Vol. 70, no 3, p. 032708-Article in journal (Refereed)
  • 14.
    Feifel, Raimund
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics and Materials Science, Physics V. Physics II.
    Tchaplyguine, Maxim
    Öhrwall, Gunnar
    Department of Physics. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics and Materials Science, Physics V. Physics II.
    Lundwall, Marcus
    Department of Physics. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics and Materials Science, Physics V. Physics II.
    Marinho, Ricardo
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics and Materials Science, Physics V. Physics II.
    Gisselbrecht, M.
    Sorensen, S. L.
    Naves de Brito, A.
    Karlsson, Leif
    Department of Physics. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics and Materials Science, Physics V. Physics II.
    Mårtensson, Nils
    Department of Physics. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics and Materials Science, Physics V. Physics II.
    Svensson, Svante
    Department of Physics. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics and Materials Science, Physics V. Physics II.
    Björneholm, Olle
    Department of Physics. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics and Materials Science, Physics V. Physics II.
    From localised to delocalised electronic states in free Ar, Kr and Xe clusters2004In: The European Physical Journal D, Vol. 30, no 3, p. 343-351Article in journal (Refereed)
  • 15. Gisselbrecht, Mathieu
    et al.
    Lindgren, Andreas
    Tchaplyguine, Maxim
    Burmeister, Florian
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics and Materials Science, Physics V.
    Öhrwall, Gunnar
    Department of Physics. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics and Materials Science, Physics V.
    Lundwall, Marcus
    Department of Physics. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics and Materials Science, Physics V.
    Lundin, Magnus
    Marinho, Ricardo R. T.
    Department of Physics. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics and Materials Science, Physics V.
    Naves de Brito, Arnaldo
    Svensson, Svante
    Department of Physics. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics and Materials Science, Physics V.
    Björneholm, Olle
    Department of Physics. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics and Materials Science, Physics V.
    Sorensen, Stacey L.
    Photon energy dependence of fragmentation of small argon clusters2005In: J. Chem. Phys., Vol. 123, p. 194301-Article in journal (Refereed)
  • 16. Holland, D. M. P.
    et al.
    Powis, I.
    Öhrwall, Gunnar
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V. Physics II.
    Karlsson, Leif
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V. Physics II.
    von Niessen, W.
    A study of the photoionisation dynamics of chloromethane and iodomethane2006In: Chemical Physics, Vol. 326, p. 535-550Article in journal (Refereed)
    Abstract [en]

    Angle resolved valence shell photoelectron spectra of chloromethane and iodomethane have been recorded using synchrotron radiation in the photon energy range 14–120 eV. These have allowed photoelectron angular distributions and branching ratios to be determined not only for the main bands associated with the single-hole states but also for the satellite structure due to many-electron effects. The continuum multiple scattering approach has been used to calculate photoelectron asymmetry parameters and branching ratios for the valence orbitals of CH3Cl and CH3I, and also for the I 4d subshell. A comparison between the experimental data and the theoretical predictions has enabled the influence of Cooper minima, shape resonances and intershell coupling to be assessed. The asymmetry parameters and branching ratio for the spin–orbit split components of the CH3I+ X~2E state have been measured and exhibit a spectral behaviour almost identical to that of the corresponding data for the Xe 5p3/2 and 5p1/2 levels. The many-body Green’s function approach has been employed to evaluate the ionisation energies and spectral intensities of all valence states and the results have facilitated an interpretation of the satellite structure. The I 4d shake-up, shake-off and Auger spectra of iodomethane have been recorded and many of the Auger peaks have been assigned using previously determined ionisation energies of doubly charged valence states.

  • 17. Holmström, E.
    et al.
    Olovsson, W.
    Abrikosov, I. A.
    Niklasson, A. M. N.
    Johansson, B.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics.
    Gorgoi, M.
    Karis, Olof
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics.
    Svensson, S.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics.
    Schäfers, F.
    Braun, W.
    Öhrwall, Gunnar
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics.
    Andersson, Gabriella
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics.
    Marcellini, Moreno
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics.
    Eberhardt, W.
    Sample preserving deep interface characterization technique2006In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 97, no 26, article id 266106Article in journal (Refereed)
    Abstract [en]

    We propose a nondestructive technique based on atomic core-level shifts to characterize the interface quality of thin film nanomaterials. Our method uses the inherent sensitivity of the atomic core-level binding energies to their local surroundings in order to probe the layer-resolved binary alloy composition profiles at deeply embedded interfaces. From an analysis based upon high energy x-ray photoemission spectroscopy and density functional theory of a Ni/Cu fcc (100) model system, we demonstrate that this technique is a sensitive tool to characterize the sharpness of a buried interface. We performed controlled interface tuning by gradually approaching the diffusion temperature of the multilayer, which lead to intermixing. We show that core-level spectroscopy directly reflects the changes in the electronic structure of the buried interfaces, which ultimately determines the functionality of the nanosized material.

  • 18. Kivimäki, A.
    et al.
    Sorensen, S. L.
    Tchaplyguine, M.
    Gisselbrecht, M.
    Marinho, R. R. T.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Feifel, Reimund
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Öhrwall, Gunnar
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Svensson, Svante
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Björneholm, Olle
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Resonant Auger spectroscopy of argon clusters at the 2p threshold2005In: Phys. Rev. A, Vol. 71, p. 033204-Article in journal (Refereed)
  • 19.
    Lindblad, Andreas
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Bergersen, Henrik
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Rander, Torbjörn
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Lundwall, Marcus
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Öhrwall, Gunnar
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Tchaplyguine, Maxim
    Svensson, Svante
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Björneholm, Olle
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    The Far from Equilibrium Structure of Argon Clusters Doped with Krypton or Xenon2006In: Physical Chemistry Chemical Physics, Vol. 16, p. 1899-Article in journal (Refereed)
  • 20.
    Lindblad, Andreas
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Fink, R. F.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Bergersen, Henrik
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Lundwall, Marcus
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Rander, Torbjörn
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Feifel, Reimund
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics II.
    Öhrwall, Gunnar
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Tchaplyguine, M.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Hergenhahn, U.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Svensson, Svante
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Björneholm, Olle
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Post-Collision Interaction in Noble Gas Clusters; Observation of Differences in Surface and Bulk Lineshapes2005In: J. Chem. Phys., Vol. 123, p. 21101-Article in journal (Refereed)
  • 21.
    Lundwall, Marcus
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics.
    Bergersen, Henrik
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics.
    Lindblad, Andreas
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics.
    Öhrwall, Gunnar
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics.
    Tchaplyguine, M.
    Svensson, Svante
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics.
    Björneholm, Olle
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics.
    Preferential site occupancy observed in coexpanded argon-krypton clusters2006In: Physical Review A. Atomic, Molecular, and Optical Physics, ISSN 1050-2947, E-ISSN 1094-1622, Vol. 74, no 4, p. 043206-Article in journal (Refereed)
    Abstract [en]

    Free heterogeneous argon-krypton clusters have been produced by coexpansion and investigated by means of x-ray photoelectron spectroscopy. By examining cluster surface and bulk binding energy shifts, relative intensities, and peak widths, we show that in the mixed argon-krypton clusters the krypton atoms favor the bulk and argon atoms are pushed to the surface. Furthermore, we show that krypton atoms in the surface layer occupy high-coordination sites and that heterogeneous argon-krypton clusters produced by coexpansion show the same surface structure as argon host clusters doped with krypton. These observations are supported by site-dependent calculations of chemical shifts.

  • 22.
    Lundwall, Marcus
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics.
    Lindblad, Andreas
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics.
    Bergersen, Henrik
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics.
    Rander, Torbjörn
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics.
    Öhrwall, Gunnar
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics.
    Tchaplyguine, M.
    Peredkov, S.
    Svensson, Svante
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics.
    Björneholm, Olle
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics.
    Photon energy dependent intensity variations observed in Auger spectra of free argon clusters2006In: Journal of Physics B: Atomic, Molecular and Optical Physics, ISSN 0953-4075, E-ISSN 1361-6455, Vol. 39, no 16, p. 3321-3333Article in journal (Refereed)
    Abstract [en]

    Photon energy dependent intensity variations are experimentally observed in the L2,3M2,3M2,3 Auger spectra of argon clusters. Two cluster sizes are examined in the present study. Extrinsic scattering effects, both elastic and inelastic, involving the photoelectron are discussed and suggested as the explanation of the variations in the Auger signal. The atoms in the first few coordination shells surrounding the core-ionized atom are proposed to be the main targets for the scattering processes.

  • 23.
    Lundwall, Marcus
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Pokapanich, Wandered
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Bergersen, Henrik
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Lindblad, Andreas
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Rander, Torbjörn
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Öhrwall, Gunnar
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Tchaplyguine, M.
    Barth, S.
    Hergenhahn, U.
    Svensson, Svante
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Björneholm, Olle
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Molecular and condensed matter physics.
    Self-assembled heterogeneous argon/neon core-shell clusters studied by photoelectron spectroscopy2007In: Journal of Chemical Physics, ISSN 0021-9606, E-ISSN 1089-7690, Vol. 126, no 21, p. 214706-Article in journal (Refereed)
    Abstract [en]

    Clusters formed by a coexpansion process of argon and neon have been studied using synchrotron radiation. Electrons from interatomic Coulombic decay as well as ultraviolet and x-ray photoelectron spectroscopy were used to determine the heterogeneous nature of the clusters and the cluster structure. Binary clusters of argon and neon produced by coexpansion are shown to exhibit a core-shell structure placing argon in the core and neon in the outer shells. Furthermore, the authors show that 2 ML of neon on the argon core is sufficient for neon valence band formation resembling the neon solid. For 1 ML of neon the authors observe a bandwidth narrowing to about half of the bulk value.

  • 24.
    Lundwall, Marcus
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Tchaplyguine, M.
    Öhrwall, Gunnar
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Lindblad, Andreas
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Peredkov, S.
    Rander, Torbjörn
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Svensson, Svante
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Björneholm, Olle
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Enhanced surface sensitivity in AES relative to XPS observed in free argon clusters2005In: Surface Science, Vol. 594, p. 12-Article in journal (Refereed)
  • 25.
    Lundwall, Marcus
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Tchaplyguine, Maxim
    Öhrwall, Gunnar
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Feifel, Reimund
    Lindblad, Andreas
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Lindgren, A.
    Sorensen, S. L.
    Svensson, Svante
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Björneholm, Olle
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Radial surface segregation in free heterogeneous argon/krypton clusters2004In: Chemical Physics Letters, Vol. 392, no 4-6, p. 433-Article in journal (Refereed)
  • 26. Minkov, I.
    et al.
    Gel´mukhanov, F.
    Friedlein, R.
    Osikowicz, W.
    Suess, C.
    Öhrwall, Gunnar
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Sorensen, S. L.
    Braun, S.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Murdey, R.
    Salaneck, W. R.
    Ågren, Hans
    Core-excitations of naphthalene: Vibrational structure versus chemical shifts2004In: The Journal of Chemical Physics, Vol. 121, p. 5733-Article in journal (Refereed)
  • 27. Peredkov, S.
    et al.
    Kivimäki, A.
    Sorensen, S.
    Schulz, J.
    Mårtensson, Nils
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Öhrwall, Gunnar
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Lundwall, Marcus
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Rander, Torbjörn
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Lindblad, Andreas
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Bergersen, Henrik
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Svensson, Svante
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Björneholm, Olle
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Tchaplyguine, M.
    Ionic-like energy structure of neutral core-excited states in free Kr clusters2005In: Phys. Rev. A, Vol. 72, p. 021201 (R)-Article in journal (Refereed)
  • 28. Peredkov, S.
    et al.
    Sorensen, S. L.
    Rosso, Aldana
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Öhrwall, Gunnar
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Lundwall, Marcus
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Rander, Torbjörn
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Lindblad, Andreas
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Bergersen, Henrik
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Pokapanich, Wandered
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Svensson, Svante
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Björneholm, Olle
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Molecular and condensed matter physics.
    Mårtensson, Nils
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Tchaplyguine, M.
    Size determination of free metal clusters by core-level photoemission from different initial charge states2007In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 76, no 8, p. 081402-Article in journal (Refereed)
    Abstract [en]

    We present the study of free nanoscale lead clusters using photoelectron spectroscopy and synchrotron radiation. Pb  5d core-level spectra reveal the presence of different initial charge states of the clusters created by the magnetron-based source. We suggest a method for determining the cluster size from the charge-dependent core level binding energies. Both the core-level and the valence spectra demonstrate that we have created free metallic clusters with essentially the same electronic structure as the solid.

  • 29. Peredkov, S.
    et al.
    Öhrwall, Gunnar
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Schulz, J.
    Lundwall, Marcus
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Rander, Torbjörn
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Lindblad, Andreas
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Bergersen, Henrik
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Rosso, Aldana
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Pokapanich, Wandered
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Mårtensson, Nils
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Svensson, Svante
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Sorensen, S. L.
    Björneholm, Olle
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Molecular and condensed matter physics.
    Tchaplyguine, M.
    Free nanoscale sodium clusters studied by core-level photoelectron spectroscopy2007In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 75, no 23, p. 235407-Article in journal (Refereed)
    Abstract [en]

    Free sodium metal clusters have been studied by probing the Na2p core level using x-ray photoelectron spectroscopy (XPS) and Auger electron spectroscopy (AES). The development of electronic structure with size has been studied and discussed in comparison with the atom, dimer, and solid. Information on cluster metallic properties, size, and temperature has been deduced from the XPS measurements. For the large ⟨N⟩>103 Na clusters, the surface and bulk sites have been separated in the photoelectron signal. Auger spectra allowed extracting the information on the valence band. The present study introduces core-level spectroscopies XPS and AES into the field of free neutral metal cluster research.

  • 30.
    Rander, Torbjörn
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Lundwall, Marcus
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Lindblad, Andreas
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Öhrwall, Gunnar
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Tchaplyguine, Maxim
    Svensson, Svante
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Björneholm, Olle
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Molecular and condensed matter physics.
    Experimental evidence for molecular ultrafast dissociation in O2 clusters2007In: European Physical Journal D: Atomic, Molecular and Optical Physics, ISSN 1434-6060, E-ISSN 1434-6079, Vol. 42, no 2, p. 253-257Article in journal (Refereed)
    Abstract [en]

    Resonant Auger spectra of O2 clusters excited at the O1s edge are reported. After excitation to the repulsive 1s-1* state, the resulting resonant Auger spectrum displays features that remain constant in kinetic energy as the photon energy is detuned. The shift between known atomic fragment features and these features is consistent with that observed for atoms and clusters in singly charged states in direct photoemission. These findings are strong evidence for the existence of molecular ultrafast dissociation processes within the clusters or on their surface.

  • 31.
    Rander, Torbjörn
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Schulz, Joachim
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Huttula, Marko
    Mäkinen, Ari
    Tchaplyguine, Maxim
    Svensson, Svante
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Öhrwall, Gunnar
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Björneholm, Olle
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Molecular and condensed matter physics.
    Aksela, Seppo
    Aksela, Helena
    Core-level electron spectroscopy on the sodium dimer Na 2p level2007In: Physical Review A. Atomic, Molecular, and Optical Physics, ISSN 1050-2947, E-ISSN 1094-1622, Vol. 75, no 3, p. 032510-Article in journal (Refereed)
    Abstract [en]

    The lifetime broadening and molecular field splitting of the sodium dimer 2p core level is studied by x-ray photoelectron spectroscopy and by Auger electron spectroscopy. The lifetime of the Na 2p core hole has been determined to be 15±8fs , much shorter than what has previously been reported for solid sodium. The molecular field splitting of this core level has been determined to be 42±10meV . The Auger measurements have experimentally confirmed that the sodium dimer is a good example of when the Coulomb explosion mechanism determines the spectral shape.

  • 32.
    Rosso, Aldana
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Pokapanich, Wandared
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Öhrwall, Gunnar
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Svensson, Svante
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Björneholm, Olle
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Molecular and condensed matter physics.
    Tchaplyguine, Maxim
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Adsorption of polar molecules on krypton clusters2007In: Journal of Chemical Physics, ISSN 0021-9606, E-ISSN 1089-7690, Vol. 127, no 8, p. 084313-084313-5Article in journal (Refereed)
    Abstract [en]

    The formation process of binary clusters has been studied using synchrotron based core level photoelectron spectroscopy. Free neutral krypton clusters have been produced by adiabatic expansion and doped with chloromethane molecules using the pickup technique. The comparison between the integrated intensities, linewidths, and level shifts of the cluster features of pure krypton and of chloromethane-krypton clusters has been used to obtain information about the cluster geometry. We have shown that most of the chloromethane molecules remain on the surface of the clusters.

  • 33. Schulz, J.
    et al.
    Heinäsmäki, S.
    Sankari, R.
    Rander, Torbjörn
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Lindblad, Andreas
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Bergersen, Henrik
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Öhrwall, Gunnar
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Svensson, Svante
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Kukk, E.
    Aksela, S.
    Aksela, H.
    Characterisation of weakly excited final states by shakedown spectroscopy of laser excited potassium2006In: Phys. Rev. A, Vol. 74, p. 12705-Article in journal (Refereed)
  • 34. Schulz, J.
    et al.
    Tchaplyguine, M.
    Rander, Torbjörn
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Bergersen, Henrik
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Lindblad, Andreas
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Öhrwall, Gunnar
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Svensson, Svante
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Heinäsmäki, S.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Sankari, R.
    Osmekhin, S.
    Aksela, S.
    Aksela, H.
    Final state selection in the 4p photoemission of Rb by combining laser spectroscopy with soft x-ray photoionization2005In: Phys. Rev. A, Vol. 72, no 032718Article in journal (Refereed)
  • 35. Shaw, D. A.
    et al.
    Holland, D. M. P.
    Poole, I. B.
    Södergren, S.
    Öhrwall, Gunnar
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics II. Physics V.
    Karlsson, Leif
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics II. Physics V.
    Chau, F. T.
    Mok, D. K-W.
    A study of vibronic coupling in excited neutral and ionic states of carbon dioxide2006In: Chemical Physics, Vol. 324, no 2-3, p. 515-526Article in journal (Refereed)
    Abstract [en]

    Dispersed fluorescence spectroscopy and photoelectron spectroscopy have been employed to study vibronic coupling in excited neutral and ionic states of carbon dioxide. The dispersed fluorescence excitation spectra of the CO2+ B~(001) 2Sigmag+ -> X~ (001) 2Piu and the B~ (002) 2Sigmau+ -> X~ (002) 2Pig transitions have revealed new structure. Some of this structure can be assigned to nsigmag or nd Rydberg series converging onto the CO2+ C~(001) 2Sigmau+ threshold or to an np Rydberg series converging onto the CO2+ C~(002) 2Sigmag+ threshold. Autoionisation from Rydberg states belonging to these series results in the formation of ions with one or two quanta of the asymmetric stretching mode being excited. The HeI excited photoelectron spectra of the CO2+ B~ 2Sigmau+ and C~ 2Sigmag+ states reveal extensive and complex vibrational structure. Transitions involving the non-totally symmetric bending and asymmetric stretching modes have been observed. The occurrence of these normally forbidden transitions is attributed to vibronic interactions.

  • 36. Stolte, W. C.
    et al.
    Sant'Anna, M. M.
    Öhrwall, Gunnar
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Dominguez-Lopez, I.
    Piancastelli, M. N. P.
    Lindle, D. W.
    Photofragmentation dynamics of core-excited water by anion-yield spectroscopy2003In: Phys. Rev. A, Vol. 68, p. 022701-Article in journal (Refereed)
    Abstract [en]

    Partial-anion and- cation yields from H2O are presented for photon energies near the oxygen K edge. The O- yield exhibits a feature above threshold attributed to doubly excited states, in contrast to the H- and cation yields, which are nearly featureless above threshold. Additionally, the lack of the OH- fragment indicates radiative decay and provides a negligible amount of anion formation.

  • 37. Stolte, W.C
    et al.
    Guillemin, R
    Öhrwall, Gunnar
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics.
    Sant´Anna, M.M
    Hansen, D.L
    Dominguez Lopez, I
    Laidman, S
    Pangilinan, M
    Schlachter, A.S
    Piancastelli, MariaNovella
    Lindle, Dennis W
    Anion Formation Moderated by Post Collision Interaction Following Core-Level Photofragmentation2002In: 19th International Conference X-Ray and Inner-Shell Processes,Rome,Italy, 2002Conference paper (Other scientific)
  • 38. Tchaplyguine, M.
    et al.
    Kivimäki, A.
    Peredkov, S.
    Sorensen, S.
    Öhrwall, Gunnar
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Schulz, Joachim
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Lundwall, Marcus
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Rander, Torbjörn
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Lindblad, Andreas
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Rosso, Aldana
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Svensson, Svante
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Mårtensson, Nils
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Björneholm, Olle
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Molecular and condensed matter physics.
    Localized versus delocalized excitations just above the 3d threshold in krypton clusters studied by Auger electron spectroscopy2007In: Journal of Chemical Physics, ISSN 0021-9606, E-ISSN 1089-7690, Vol. 127, no 12, p. 124314-Article in journal (Refereed)
    Abstract [en]

    We present Auger spectroscopy studies of large krypton clusters excited by soft x-ray photons with energies on and just above the 3d(52) ionization threshold. The deexcitation spectra contain new features as compared to the spectra measured both below and far above threshold. Possible origins of these extra features, which stay at constant kinetic energies, are discussed: (1) normal Auger process with a postcollision interaction induced energy shift, (2) recapture of photoelectrons into high Rydberg orbitals after Auger decay, and (3) excitation into the conduction band (or "internal" ionization) followed by Auger decay. The first two schemes are ruled out, hence internal ionization remains the most probable explanation.

  • 39. Tchaplyguine, M.
    et al.
    Peredkov, S.
    Rosso, Aldana
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Schulz, J.
    Öhrwall, Gunnar
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Lundwall, Marcus
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Rander, Torbjörn
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Lindblad, Andreas
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Bergersen, Henrik
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Pokapanich, Wandared
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Svensson, Svante
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Sorensen, S. L.
    Mårtensson, Nils
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
    Björneholm, Olle
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Molecular and condensed matter physics.
    Direct observation of the non-supported metal nanoparticle electron density of states by X-ray photoelectron spectroscopy2007In: European Physical Journal D: Atomic, Molecular and Optical Physics, ISSN 1434-6060, E-ISSN 1434-6079, Vol. 45, no 2, p. 295-299Article in journal (Refereed)
    Abstract [en]

    Synchrotron-based X-ray photoelectron spectroscopy on copper and silver cluster beams created by a magnetron-based gas-aggregation source has allowed mapping the electron density of states (DOS) of free metallic nanoparticles. The cluster DOS profiles obtained in the experiments strongly resemble the infinite solid DOS shapes, but the extracted cluster work-functions are lower than those for the bulk metal. The latter observation is explained by the initial negative charge on most of the clusters, created by the source.

  • 40. Tchaplyguine, Maxim
    et al.
    Lundwall, Marcus
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Gisselbrecht, M.
    Öhrwall, Gunnar
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Feifel, Reimund
    Sorensen, S. L.
    Svensson, Svante
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Mårtensson, Nils
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Björneholm, Olle
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Variable surface composition and radial interface formation in self-assembled free , heterogeneous Ar/Xe clusters2004In: Physical Review A, Vol. 69, p. 031201-Article in journal (Refereed)
  • 41. Tchaplyguine, Maxim
    et al.
    Marinho, R. R. T.
    Gisselbrecht, M.
    Feifel, Reimund
    Sorensen, S. L.
    Öhrwall, Gunnar
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Lundwall, Marcus
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Naves de Brito, A.
    Schulz, Joachim
    Mårtensson, Nils
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Svensson, Svante
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Björneholm, Olle
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    The size of neutral free clusters as manifested in the relative surface-bulk intensity in core level photoelectron spectroscopy2004In: The Journal of Chemical Physics, Vol. 120, p. 345-Article in journal (Refereed)
  • 42.
    Tchaplyguine, Maxim
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Peredkov, Serguei
    Svensson, Håkan
    Schulz, Joachim
    Öhrwall, Gunnar
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Lundwall, Marcus
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Rander, Torbjörn
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Lindblad, Andreas
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Bergersen, Henrik
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Svensson, Svante
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Sorensen, Stacey
    Gridneva, Lidia
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Mårtensson, Nils
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Gisselbrecht, Mathieu
    Björneholm, Olle
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Magnetron-based Source of Neutral Metal Vapors for Photoelectron Spectroscopy2006In: Review of Scientific Instruments, Vol. 77, p. 033106-Article in journal (Refereed)
  • 43. Yu, S. W.
    et al.
    Stolte, W. C.
    Guillemin, R.
    Öhrwall, Gunnar
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Tran, I. C,
    Piancastelli, Maria-Novella
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Lindle, D. W.
    Photofragmentation study of core-excited NO2004In: Journal of Physics B, Vol. 37, p. 3583-Article in journal (Refereed)
  • 44. Yu, Sung W.
    et al.
    Stolte, W. C.
    Öhrwall, Gunnar
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Guillemin, R.
    Dominguez-Lopez, I.
    Piancastelli, M. N. P.
    Lindle, D. W.
    Anionic and cationic photofragmentation of core-excited N2O2003In: J. Phys. B: At. Mol. Opt. Phys, ISSN ISSN 0953-4075, Vol. 36, p. 1255-1261Article in journal (Refereed)
    Abstract [en]

    We have measured all detectable cationic and anionic fragments in singlechannel mode from N2O as a function of photon energy in the vicinity of the nitrogen 1s core-level threshold. Due to the high degree of localization of the core electrons, the two excitations Nt1s → 3π∗ and Nc1s → 3π∗ show high levels of site-selective behaviour. The observed partial ion yield for the sole anionic fragment,O−, in conjunctionwith the partial cation yields,confirms our previous demonstration of anion-yield spectroscopy as a unique tool to identify core-level shape resonances.

  • 45.
    Öhrwall, G
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics I.
    Baltzer, P
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics I.
    Bozek, J
    Synchrotron radiation excited photoelectron spectrum of H2(+) with rotational resolution1999In: J. Phys. B: At. Mol. Opt. Phys, ISSN ISSN 0953-4075, Vol. 32, no 3, p. L51-L56Article in journal (Refereed)
    Abstract [en]

    The rotational branching ratio in the photoelectron spectrum of H-2(+) has been investigated using synchrotron radiation. At the photon energy hv = 27 eV, the S (Delta N = 2) branch has a considerably higher relative intensity than when excited with He I (lambda=584 Å, hv=21.218 eV) or with Ne I (lambda=736 Å, hv=16.848) radiation.

  • 46.
    Öhrwall, Gunnar
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Fink, R. F.
    Tchaplyguine, M.
    Ojamäe, L.
    Lundwall, Marcus
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Marinho, R. R. T.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Naves de Brito, A.
    Sorensen, S. L.
    Gisslebrecht, M.
    Feifel, Reimund
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Rander, Torbjörn
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Lindblad, Andreas
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Schultz, J.
    Saethre, L. J.
    Mårtensson, Nils
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Svensson, Svante
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Björneholm, Olle
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    The electronic structure of free water clusters probed by Auger electron spectroscopy2005In: J. Chem. Phys., Vol. 123, p. 054310-Article in journal (Refereed)
  • 47.
    Öhrwall, Gunnar
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Tchaplyguine, Maxim
    Lundwall, Marcus
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Feifel, Reimund
    Bergersen, Henrik
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Rander, Torbjörn
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Lindblad, Andreas
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Schultz, Joachim
    Peredkov, S.
    Barth, S.
    Marburger, S.
    Hergenhahn, U.
    Svensson, Svante
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Björneholm, Olle
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics V.
    Femtosecond interatomic Copulombic decay in free neon clusters: Large lifetime differences between surface and bulk2004In: Physical Review Letters, Vol. 93, p. 173401-Article in journal (Refereed)
1 - 47 of 47
CiteExportLink to result list
Permanent link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf