Fits to new calculations of photoionization cross sections for low-Z elements

Analytical approximations to results of new calculations of partial (i.e. by subshell) photoionization cross sections of elements (2 < Z < 30, Z = 36) are presented which cover the photon energy range from near threshold to 300 keV. The computer program developed by Brysk and Zerby, which is b...

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Published inJournal of quantitative spectroscopy & radiative transfer Vol. 12; no. 10; pp. 1409 - 1433
Main Authors Barfield, W.D., Koontz, G.D., Huebner, W.F.
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.01.1972
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Summary:Analytical approximations to results of new calculations of partial (i.e. by subshell) photoionization cross sections of elements (2 < Z < 30, Z = 36) are presented which cover the photon energy range from near threshold to 300 keV. The computer program developed by Brysk and Zerby, which is based on the single-electron model and uses screened self-consistent field and Dirac-Slater wave function data furnished by Cromer, Waber and Liberman, was used. Sufficient multipoles were included to calculate the partial cross sections within a few per cent, on the assumed model. Results for several elements are compared with other calculations and measurements of total photoionization cross sections. The results are presented in a form most convenient for calculations of opacities of hot gases.
ISSN:0022-4073
1879-1352
DOI:10.1016/0022-4073(72)90043-X