Breakdown of the Two-Step Model in K-Shell Photoemission and Subsequent Decay Probed by the Molecular-Frame Photoelectron Angular Distributions of CO2 - Archive ouverte HAL Access content directly
Journal Articles Physical Review Letters Year : 2008

Breakdown of the Two-Step Model in K-Shell Photoemission and Subsequent Decay Probed by the Molecular-Frame Photoelectron Angular Distributions of CO2

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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.
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Dates and versions

cea-00358606 , version 1 (03-02-2009)

Identifiers

  • HAL Id : cea-00358606 , version 1

Cite

X.-J. Liu, H. Fukuzawa, T. Teranishi, A. de Fanis, M. Takahashi, et al.. Breakdown of the Two-Step Model in K-Shell Photoemission and Subsequent Decay Probed by the Molecular-Frame Photoelectron Angular Distributions of CO2. Physical Review Letters, 2008, 101, pp.083001. ⟨cea-00358606⟩
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