Relativistic effects in the impact-parameter dependence of K-shell ionization of heavy elements

D. L. Clark, T. K. Li, J. M. Moss, G. W. Greenless, M. E. Cage, J. H. Broadhurst

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Abstract

The impact-parameter dependence of K-vacancy production in Ta, Au, Bi and U by 4 MeV protons has been measured using a magnetic spectrometer and fast coincidence techniques. The ionization probabilities are greater than non-relativistic SCA predictions by as much as a factor of four. The inclusion of relativistic electronic wavefunctions in the SCA calculations substantially reduces the discrepancies.

Original languageEnglish (US)
Article number004
Pages (from-to)L378-L381
JournalJournal of Physics B: Atomic and Molecular Physics
Volume8
Issue number15
DOIs
StatePublished - Dec 1 1975

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