Breakdown of the two-step model in k-shell photoemission and subsequent decay probed by the molecular-frame photoelectron angular distributions of CO2

X. J. Liu, H. Fukuzawa, T. Teranishi, A. De Fanis, M. Takahashi, H. Yoshida, A. Cassimi, A. Czasch, L. Schmidt, R. Dörner, K. Wang, B. Zimmermann, V. McKoy, I. Koyano, N. Saito, K. Ueda

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)

Abstract

We report results of measurements and of Hartree-Fock level calculations of molecular-frame photoelectron angular distributions (MFPADs) for C 1s photoemission from CO2. The agreement between the measured and calculated MFPADs is on average reasonable. The measured MFPADs display a weak but definite asymmetry with respect to the O+ and CO+ fragment ions at certain energies, providing evidence for an overlap of gerade and ungerade final ionic states giving rise to a partial breakdown of the two-step model of core-level photoionization and its subsequent Auger decay.

Original languageEnglish
Article number083001
JournalPhysical review letters
Volume101
Issue number8
DOIs
Publication statusPublished - 2008 Aug 20

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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