Journal Article

PUBDB-2022-04136

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Multiple photodetachment of oxygen anions via $K$-shell excitation and ionization: Direct double-detachment processes and subsequent deexcitation cascades

Schippers, S. (Corresponding author)Extern* ; Hamann, A.Extern* ; Perry-Sassmannshausen, A.Extern* ; Buhr, T.Extern* ; Mueller, A.Extern* ; Martins, M.Extern*XFEL.EU* ; Reinwardt, S.Extern* ; Trinter, F.Extern*XFEL.EU* ; Fritzsche, S.Extern*

2022
Inst. Woodbury, NY

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Please use a persistent id in citations: doi:10.1103/PhysRevA.106.013114  doi:10.3204/PUBDB-2022-04136

Abstract: Experimental cross sections for m-fold photodetachment (m=2–5) of oxygen anions via K-shell excitation and ionization were measured in the photon-energy range of 525–1500 eV using the photon-ion merged-beams technique at a synchrotron light source. The measured cross sections exhibit clear signatures of direct double detachment, including double K-hole creation. The shapes of the double-detachment cross sections as a function of photon energy are in accord with Pattard's [J. Phys. B 35, L207 (2002)] empirical scaling law. We have also followed the complex de-excitation cascades that evolve subsequently to the initial double-detachment events by systematic large-scale cascade calculations. The resulting theoretical product charge-state distributions are in good agreement with the experimental findings.

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Contributing Institute(s):

1. DOOR-User (DOOR ; HAS-User)

Research Program(s):

1. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)
2. FS-Proposal: I-20220443 (I-20220443) (I-20220443)

Experiment(s):

1. PETRA Beamline P04 (PETRA III)

Appears in the scientific report 2022

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

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