Relativistic cross sections of electron-impact ionization of hydrogenic ions

Hsien Chung Kao; Tien Yow Kuo; Hsiang Ping Yen; Ching Ming Wei; Keh Ning Huang

doi:10.1103/PhysRevA.45.4646

Relativistic cross sections of electron-impact ionization of hydrogenic ions

Hsien Chung Kao^*, Tien Yow Kuo, Hsiang Ping Yen, Ching Ming Wei, Keh Ning Huang

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

23 Citations (Scopus)

Abstract

Total and single-differential cross sections for electron-impact ionizaton are calculated in a relativistic formulation for ions in the hydrogen isoelectronic sequence: Hi i, He ii, C vi, Ne x, Fe xxvi, and Ag xlvii. Transition amplitudes are evaluated in the two-potential distorted-wave approximation. Sets of different asymptotic charges are used to study the mutual screening of the primary and secondary electrons. Relativistic effects are investigated by taking the nonrelativistic limit and are found to increase the cross sections. Thomsons scaling law along the isoelectronic sequence is also studied.

Original language	English
Pages (from-to)	4646-4652
Number of pages	7
Journal	Physical Review A
Volume	45
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevA.45.4646
Publication status	Published - 1992
Externally published	Yes

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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10.1103/PhysRevA.45.4646

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AU - Kao, Hsien Chung

AU - Kuo, Tien Yow

AU - Yen, Hsiang Ping

AU - Wei, Ching Ming

AU - Huang, Keh Ning

PY - 1992

Y1 - 1992

N2 - Total and single-differential cross sections for electron-impact ionizaton are calculated in a relativistic formulation for ions in the hydrogen isoelectronic sequence: Hi i, He ii, C vi, Ne x, Fe xxvi, and Ag xlvii. Transition amplitudes are evaluated in the two-potential distorted-wave approximation. Sets of different asymptotic charges are used to study the mutual screening of the primary and secondary electrons. Relativistic effects are investigated by taking the nonrelativistic limit and are found to increase the cross sections. Thomsons scaling law along the isoelectronic sequence is also studied.

AB - Total and single-differential cross sections for electron-impact ionizaton are calculated in a relativistic formulation for ions in the hydrogen isoelectronic sequence: Hi i, He ii, C vi, Ne x, Fe xxvi, and Ag xlvii. Transition amplitudes are evaluated in the two-potential distorted-wave approximation. Sets of different asymptotic charges are used to study the mutual screening of the primary and secondary electrons. Relativistic effects are investigated by taking the nonrelativistic limit and are found to increase the cross sections. Thomsons scaling law along the isoelectronic sequence is also studied.

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Relativistic cross sections of electron-impact ionization of hydrogenic ions

Abstract

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