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Published June 1, 1974 | public
Journal Article Open

Calculation of helium photoionization in the random-phase approximation using square-integrable basis functions

Abstract

The photoionization cross section of helium is calculated by a numerical analytic continuation of the frequency-dependent polarizability. Approximate values of the polarizability are obtained by an application of the equations-of-motion method. The entire calculation is performed without the use of continuum basis functions. The calculated cross sections agree well with the observed values.

Additional Information

© 1974 by The American Physical Society. Received 15 November 1973; revised 4 March 1974. One of the authors (T.N.R.) would like to acknowledge helpful conversations with J.J. Broad and W.P. Reinhardt. Supported by a grant from the National Science Foundation. [V.M. was a] Guggenheim Foundation Fellow (1973). Arthur Amos Noyes Laboratory of Chemical Physics, Contribution No. 4794.

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August 22, 2023
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