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Abbreviated Journal Title

Phys. Rev. A

Keywords

Ionization Cross-Sections; Resolved Photoelectron Spectrometry; Synchrotron Radiation; Branching Ratios; Spectroscopy; Chlorine; Photoionisation; Photoabsorption; Threshold; Electron; Optics; Physics; Atomic; Molecular & Chemical

Abstract

The valence shell photoionization branching ratios of atomic oxygen are measured at the multiplet term level in a synchrotron-radiation-based electron spectrometry experiment and calculated using the multiconfiguration Hartree-Fock (MCHF) method for photon energies between 20 and 212 eV. The 2p (S-4,D-2,P-2) branching ratios, 2s P-2 to 2s P-4 intensity ratio, and 2s to 2p cross-section ratio for removal of a 2s of 2p electron are presented, and satisfactory agreement between the experiment and the MCHF calculation is found. In addition, the relative photoionization cross section is measured between 24 and 122 eV and is compared with calculations and a previous absolute cross-section measurement. Good agreement between the experimental and MCHF results is seen.

Journal Title

Physical Review A

Volume

52

Issue/Number

6

Publication Date

1-1-1995

Document Type

Article

Language

English

First Page

4656

Last Page

4664

WOS Identifier

WOS:A1995TK65200046

ISSN

1050-2947

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