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 journalArticlepeer-review

23 Citations (Scopus)


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 languageEnglish
Pages (from-to)4646-4652
Number of pages7
JournalPhysical Review A
Issue number7
Publication statusPublished - 1992
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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