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Photoionization cross sections for H2 in the random phase approximation with a square-integrable basis

✍ Scribed by P.H.S. Martin; T.N. Rescigno; V. McKoy; W.H. Henneker

Publisher: Elsevier Science
Year: 1974
Tongue: English
Weight: 655 KB
Volume: 29
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(74)85077-3

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✦ Synopsis

Total photoionization, cross sections for H2 are ulculared in the random phase approximation (RPA) through a nur;lerical analytic coniinuation procedure applied to the polarrability for complex val&s of the frequency. The reprcsentition of the polarizability that is required is obtained from 3 discrete set of excitation energies and OS& htsr stcengths that satisfies the Thomas-Rziche-Kuhn sum ;-I& exactly and other enera-w&&ted sum rules ap-PrOximatelY.

The fact ttit the excitation spectrum is obtained through B sol&on of the RPA equations with no antinuum functions added to the basis makes the method well suited f,Jr general molecular photoionization calculations, The results are comp&d with exper'.ment and gcod agreement is found.

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