Spin- and fine-structure-resolved ionization of krypton

S. Bellm*, J. Lower, R. P. McEachran, E. Weigold, C. Ryan-Anderson, D. H. Madison

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    6 Citations (Scopus)

    Abstract

    The influence of exchange, correlation, and relativistic effects in the ionization of heavy-target atoms can be sensitively probed by kinematically complete studies involving spin-polarized electrons, in particular when the fine structure of the residual ion is resolved. We present spin asymmetries, triple differential cross sections, and branching ratios for the ionization, by 127.5-eV and 114.3-eV electrons, of ground-state krypton atoms leading to the Kr+ 4s S 1/2 2, 4 p5 P 1/2 2, and 4 p5 P 3/2 2 states. In order to untangle contributions from different physical effects, the experimental results are compared to those from distorted-wave Born approximation calculations (non- and semirelativistic) in which bound-state and continuum effects are treated in different ways. Additional insight is gained by comparing the present experimental and theoretical results to recent results on the e-Xe system, performed under similar kinematics, for which target relativistic effects play a more significant role.

    Original languageEnglish
    Article number062707
    JournalPhysical Review A - Atomic, Molecular, and Optical Physics
    Volume78
    Issue number6
    DOIs
    Publication statusPublished - 10 Dec 2008

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