Relativistic structure description and relaxation effect on krypton 4p5(2P3/2,1/2)5s excitation at small squared momentum transfer

Qicun Shi, Suimeng Zhang, Hyuck Cho, Kezun Xu, Jia Ming Li, Sabre Kais

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Relativistic generalized oscillator strengths (GOSs) at small squared momentum transfer (K2 ≤ 1 au) for krypton 4p5(2P1/2,3/2)5s excitations are studied in detail under the first-order Born approximation based on the Dirac-Fock (DF) and Dirac-Fock-Slater (DS) theories. Comparisons are made with the existing experiment at 300 and 500 eV. The large GOS difference between the local-type and non-local-type exchange interactions in the target, and the large influence of the relativistic effects on the GOS are shown at K2 less than 0.1. Particularly, the relaxation effect between the ground- and excited-state single configurations, and the Coulomb correlation effect by a model potential as a function of local density are investigated. Comparisons with the experiment show that the relaxation effect is more important than the correlation effect. The present DF calculation, although not involving the non-local correlation, yields both the GOS and the excitation energy closer to the experimental values than the DS calculation, due to the very small correlation effect in the outer-shell excitations. Results of krypton show that the average-configuration-state approximation in the DF theory is suitable to describe the excited-state single configuration including 4p14p45s1 and 4p24p35s1 subshells.

Original languageEnglish
Pages (from-to)4123-4135
Number of pages13
JournalJournal of Physics B: Atomic, Molecular and Optical Physics
Volume31
Issue number18
DOIs
Publication statusPublished - 28 Sep 1998
Externally publishedYes

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krypton
momentum transfer
oscillator strengths
excitation
configurations
relativistic effects
Born approximation
ground state
approximation
interactions
energy

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Physics and Astronomy(all)

Cite this

Relativistic structure description and relaxation effect on krypton 4p5(2P3/2,1/2)5s excitation at small squared momentum transfer. / Shi, Qicun; Zhang, Suimeng; Cho, Hyuck; Xu, Kezun; Li, Jia Ming; Kais, Sabre.

In: Journal of Physics B: Atomic, Molecular and Optical Physics, Vol. 31, No. 18, 28.09.1998, p. 4123-4135.

Research output: Contribution to journalArticle

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