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
Multielectron coincidence study of the double Auger decay of 3d-ionized krypton
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Mjukröntgenfysik.
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Mjukröntgenfysik.
Visa övriga samt affilieringar
2010 (Engelska)Ingår i: Physical Review A. Atomic, Molecular, and Optical Physics, ISSN 1050-2947, E-ISSN 1094-1622, Vol. 82, nr 4, s. 043418-Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Multielectron coincidence data for triple ionization of krypton have been recorded above the 3d ionization threshold at two photon energies (140 and 150 eV). Three principal transition pathways have been observed, two involving double Auger transitions from Kr+, and one involving single Auger transitions from Kr2+ created by direct single-photon double ionization. The decay of the 3d(9) D-2(5/2,3/2) states in Kr+ has been analyzed in some detail and is found to be strongly dominated by cascade processes where two electrons with well-defined energies are emitted. The decay paths leading to the 4s(2)4p(3) S-4, D-2, and P-2 states of Kr3+ are analyzed and energies of seven intermediate states in Kr2+ are given. A preliminary investigation of the decay paths from Kr+ 3d (9)4p(5)nl shake-up states has also been carried out.

Ort, förlag, år, upplaga, sidor
2010. Vol. 82, nr 4, s. 043418-
Nationell ämneskategori
Fysik
Identifikatorer
URN: urn:nbn:se:uu:diva-122568DOI: 10.1103/PhysRevA.82.043418ISI: 000283114900005OAI: oai:DiVA.org:uu-122568DiVA, id: diva2:310560
Tillgänglig från: 2010-04-14 Skapad: 2010-04-14 Senast uppdaterad: 2017-12-12Bibliografiskt 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(1494 kB)82 nedladdningar
Filinformation
Filnamn FULLTEXT01.pdfFilstorlek 1494 kBChecksumma SHA-512
94b77cd4dabef572093f13b70e54abe27469cc7ed4d077116a99f0c23084f980f9d00d7a1c9c1bcb78ad646433abaf3c7c56f5d52cbe477596d807f73ce7d6bb
Typ fulltextMimetyp application/pdf

Övriga länkar

Förlagets fulltext

Personposter BETA

Andersson, EgilHedin, LageRubensson, Jan-ErikKarlsson, LeifFeifel, Raimund

Sök vidare i DiVA

Av författaren/redaktören
Andersson, EgilHedin, LageRubensson, Jan-ErikKarlsson, LeifFeifel, Raimund
Av organisationen
Mjukröntgenfysik
I samma tidskrift
Physical Review A. Atomic, Molecular, and Optical Physics
Fysik

Sök vidare utanför DiVA

GoogleGoogle Scholar
Totalt: 82 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: 759 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