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Abbreviated Journal Title

Phys. Rev. A

Keywords

Photoionization Cross-Sections; Resolution Photoelectron Spectrometry; Vacuum Ultraviolet Region; Absorption-Spectrum; Angular-Distributions; Synchrotron Radiation; Photo-Ionization; Halogen Atoms; Br; Chlorine; Optics; Physics, Atomic; Molecular & Chemical

Abstract

The relative partial photoionization cross sections sigma(i) and photoelectron angular distribution parameters beta(1) are measured for all possible final ionic states of Br+ between the P-3(2) and S-1(0) thresholds. The decay patterns of the autoionizing 4p(4 3)P(1,0) nl, 4p(4 1)D(2) nl, and 4p(4 1)S(0) nl Rydberg series arising from the 4p ins,md excitations are observed at the fine-structure level in all available channels. For each Rydberg series, the energies, quantum defects, and photoelectron angular distribution parameters are determined, as well as the widths and shape parameters of the low-lying members. Relative total cross sections are derived from the partial cross sections and from ion-yield measurements over the lowest members of the P-3(1,0) and D-1(2) series. All major spectroscopic and dynamic properties of these series are reported for this open-shell atom. Conclusions are drawn from the comprehensive data sets in comparison with other halogen atoms and the neighboring closed-shell rare gas atoms. Our results, encompassing the entire autoionization regime, are compared with other experimental data and theoretical calculations, where available.

Journal Title

Physical Review A

Volume

57

Issue/Number

6

Publication Date

1-1-1998

Document Type

Article

Language

English

First Page

4420

Last Page

4431

WOS Identifier

WOS:000074160600050

ISSN

1050-2947

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