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Published July 28, 2006 | Published
Journal Article Open

Vibrationally resolved partial cross sections and asymmetry parameters for carbon K-shell photoionization of the CO_2 molecule

Abstract

We have measured the vibrationally resolved partial cross sections \sigma_{v_1^{\prime}} and asymmetry parameters \beta_{v_1^{\prime}} for C K-shell photoionization of the CO2 molecule in the Σu shape resonance region above the C K-shell ionization threshold. The positions of both the maxima of \sigma_{v_1^{\prime}} and the minima of \beta_{v_1^{\prime}} move towards the C K-shell threshold with increasing symmetric stretching vibrational excitation v'1 in the C 1s single-hole state. Calculations employing the relaxed-core Hartree–Fock approach reproduce the observed vibrational effects.

Additional Information

Copyright © Institute of Physics and IOP Publishing Limited 2006. Received 10 April 2006, in final form 23 May 2006. Published 11 July 2006. Print publication: Issue 14 (28 July 2006) The experiment was carried out with the approval of the SPring-8 program review committee. This study was supported by Grants-in-Aid for Scientific Research from the Japanese Society for the Promotion of Science and a grant from the National Science Foundation (USA).

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Created:
August 22, 2023
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October 16, 2023