Document Type

Article

Publication Date

11-1998

Publication Title

Physical Review A

Publisher

American Physical Society

Volume

58

Issue

5

First page number:

3757

Last page number:

3765

Abstract

The relaxation dynamics of HCl, DCl, H2S, and D2S following photoexcitation in the vicinities of the Cl and S K-shell thresholds (~2.8 keV for Cl, ~2.5 keV for S) were studied by means of ion time-of-flight mass spectroscopy. In all cases, the onset of pre-edge core-shell photoionization precedes the formation on resonance of a significant amount of neutral hydrogen as well as postcollision-interaction effects above threshold. Examination of the width of the H+ peak in spectra taken with the analyzer parallel and perpendicular to the polarization vector of the incident light indicates that on resonance, the photofragmentation asymmetry parameter, β, is approximately two for HCl, and is clearly positive for H2S.

Keywords

Electronic excitation; Electrons – Emission; Ionization; Nuclear shell theory; Photoionization

Disciplines

Atomic, Molecular and Optical Physics | Physics

Language

English

Permissions

Copyright American Physical Society. Used with permission.


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