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Abbreviated Journal Title

Phys. Rev. A

Keywords

Optics; Physics; Atomic; Molecular & Chemical

Abstract

The numerical multiconfiguration Hartree-Fock method is used to calculate the photoionization cross section for the Cs 7d excited state. The electron correlation and the dynamical core-polarization effects, which are very important for photoionization-cross-section calculations of the cesium atom, have been taken into account in an ab initio manner through the configuration-interaction procedure. A minimum has been found in the total photoionization cross section. The calculation of the photoionization angular-distribution asymmetry parameter is proved to be an excellent test to determine the existence and location of the minimum in the cross section. The length and velocity forms of the cross section and the asymmetry parameter are found to be in excellent agreement over the entire incident photon energy range considered, suggesting that converged results may be obtained in this interval with the present approach. The results obtained are compared with the recent experimental measurements of the absolute photoionization cross section and are found to be in good agreement.

Journal Title

Physical Review A

Volume

41

Issue/Number

1

Publication Date

1-1-1990

Document Type

Article

Language

English

First Page

174

Last Page

180

WOS Identifier

WOS:A1990CM77900025

ISSN

1050-2947

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