Journal Article

PUBDB-2025-00065

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Iodine K- and L-edge X-ray absorption spectra of HI: The effect of molecular orbitals and core subshells

Hauko, R. (Corresponding author)Extern* ; Gomilšek, J. P. ; Kodre, A.Extern* ; Arčon, I.Extern* ; Luin, U.Extern*

2025
Pergamon Press Frankfurt, M.

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Please use a persistent id in citations: doi:10.1016/j.radphyschem.2025.112509

Abstract: Analysis of the recently measured absorption spectra of molecular HI at K and L edges of iodine, in parallel withpreviously measured spectra of noble gas Xe and the K edge spectrum of atomic I, is presented. A strongdependence of some valence multielectron photoexcitation features on the orbital momentum of the core vacancyis found, attributed to the change of the symmetry of the HI molecule: the shake-up coexcitation of avalence electron to a free molecular orbital is much stronger at L3 than L1 edge. The effect of angular momentumof the core hole on the shake processes of deeper multielectron photoexcitations is found negligible. Both HI andXe exhibit a much weaker one-electron transition [1s]6p than monatomic I. At the K edge, the strength ofcoexcitations of 4d, 4p and 3d subshells in atomic I is close to the HI and Xe. The same is found for HI and Xe atthe L edges, due to a weak contribution of the additional free molecular orbital in HI.

Note: ISSN 0969-806X not unique: **3 hits**. Waiting for fulltext

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Contributing Institute(s):

1. FS DOOR-User (FS DOOR-User)

Research Program(s):

1. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)
2. FS-Proposal: I-20180356 EC (I-20180356-EC) (I-20180356-EC)
3. CALIPSOplus - Convenient Access to Light Sources Open to Innovation, Science and to the World (730872) (730872)

Experiment(s):

1. PETRA Beamline P65 (PETRA III)

Appears in the scientific report 2025

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Database coverage:
; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF < 5 ; JCR ; Nationallizenz ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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