uu.seUppsala universitets publikationer
Ändra sökning
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Formation of Kr3+ via core-valence doubly ionized intermediate states
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Mjukröntgenfysik.
Visa övriga samt affilieringar
2012 (Engelska)Ingår i: Physical Review A. Atomic, Molecular, and Optical Physics, ISSN 1050-2947, E-ISSN 1094-1622, Vol. 85, nr 3, s. 032502-Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

The time-of-flight photoelectron-photoion coincidence technique has been used to study single-photon 3d(9)4p(5) core-valence double ionization of Kr and subsequent Auger decay to triply charged states associated with the 4s(2)4p(3) and 4s(1)4p(4) configurations. The photon energy used was h nu = 150 eV. Multiconfiguration Dirac-Fock calculations were performed both for the doubly ionized intermediate states and the triply ionized final states. The intermediate states of Kr2+ are observed between 120 and 125 eV, whereas the final states of Kr3+ are observed between 74- and 120-eV ionization energy. Assignments of all structures are made based on the present numerical results. The calculated Auger rates give a detailed explanation of the relative line strengths observed.

Ort, förlag, år, upplaga, sidor
2012. Vol. 85, nr 3, s. 032502-
Nationell ämneskategori
Fysik
Identifikatorer
URN: urn:nbn:se:uu:diva-172032DOI: 10.1103/PhysRevA.85.032502ISI: 000301104400014OAI: oai:DiVA.org:uu-172032DiVA, id: diva2:513397
Tillgänglig från: 2012-04-02 Skapad: 2012-04-01 Senast uppdaterad: 2017-12-07Bibliografiskt granskad
Ingår i avhandling
1. Multi-Electron Coincidence Studies of Atoms and Molecules
Öppna denna publikation i ny flik eller fönster >>Multi-Electron Coincidence Studies of Atoms and Molecules
2010 (Engelska)Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
Abstract [en]

This thesis concerns multi-ionization coincidence measurements of atoms and small molecules using a magnetic bottle time-of-flight (TOF) spectrometer designed for multi-electron coincidence studies. Also, a time-of-flight mass spectrometer has been used together with the TOF electron  spectrometer for electron-ion coincidence measurements. The multi-ionization processes have been studied by employing a pulsed discharge lamp in the vacuum ultraviolet spectral region and synchrotron radiation in the soft X-ray region. The designs of the spectrometers are described in some detail, and several timing schemes suitable for the light sources mentioned above are presented.

Studies have been performed on krypton, molecular oxygen, carbon disulfide and a series of alcohol molecules. For the latter, double ionization spectra have been recorded and new information has been obtained on the dicationic states. A recently found rule-of-thumb  and quantum chemical calculations have been used to quantify the effective distance of the two vacancies in the dications of these molecules.

For Kr, O2, and CS2, single-photon core-valence spectra have been obtained at the synchrotron radiation facility BESSY II in Berlin and interpreted on the basis of quantum chemical calculations. These spectra show a remarkable similarity to conventional valence photoelectron spectra.

Spectra of triply charged ions were recorded, also at BESSY II, for Kr and CS2 by measuring, in coincidence, all three electrons ejected. The complex transition channels leading to tricationic states were mapped in substantial detail for Kr. It was found that for 3d-ionized krypton, the tricationic states are dominantly populated by cascade Auger decays via distinct intermediate states whose energies have been determined. The triple ionization spectra of CS2 from the direct double Auger effect via S2p, S2s and C1s hole states contain several resolved features and show selectivity based on the initial charge localisation and on the identity of the initial state.

Ort, förlag, år, upplaga, sidor
Uppsala: Acta Universitatis Upsaliensis, 2010. s. 71
Serie
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology, ISSN 1651-6214 ; 743
Nyckelord
multi-ionization, electron emission, time-of-flight spectroscopy, coincidence spectroscopy, core-valence ionization, synchrotron radiation, electron correlation
Nationell ämneskategori
Atom- och molekylfysik och optik
Forskningsämne
Fysik med inriktning mot atom- molekyl- och kondenserande materiens fysik
Identifikatorer
urn:nbn:se:uu:diva-122811 (URN)978-91-554-7805-6 (ISBN)
Disputation
2010-05-29, Häggsalen, Ångströmlaboratoriet, Lägerhyddsvägen 1, Uppsala, 13:15 (Engelska)
Opponent
Handledare
Tillgänglig från: 2010-05-03 Skapad: 2010-04-20 Senast uppdaterad: 2013-09-20

Open Access i DiVA

fulltext(1349 kB)86 nedladdningar
Filinformation
Filnamn FULLTEXT01.pdfFilstorlek 1349 kBChecksumma SHA-512
4f93e7ec330db07e9e0b10ed27a820308ed5c9a396226ed70fe718ebc9b6140e756e23f37498c454b90377e6e09d098d13d51b45c282506b841693d42696be67
Typ fulltextMimetyp application/pdf

Övriga länkar

Förlagets fulltext

Personposter BETA

Hedin, LageEland, John H. D.Karlsson, LeifRubensson, Jan-ErikFeifel, Raimund

Sök vidare i DiVA

Av författaren/redaktören
Hedin, LageEland, John H. D.Karlsson, LeifRubensson, Jan-ErikFeifel, Raimund
Av organisationen
Mjukröntgenfysik
I samma tidskrift
Physical Review A. Atomic, Molecular, and Optical Physics
Fysik

Sök vidare utanför DiVA

GoogleGoogle Scholar
Totalt: 86 nedladdningar
Antalet nedladdningar är summan av nedladdningar för alla fulltexter. Det kan inkludera t.ex tidigare versioner som nu inte längre är tillgängliga.

doi
urn-nbn

Altmetricpoäng

doi
urn-nbn
Totalt: 770 träffar
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf