L- and M-shell ionization cross sections for 3-40-MeV-proton bombardments

K. Sera, K. Ishii, A. Yamadera, A. Kuwako, M. Kamiya, M. Sebata, S. Morita, T. C. Chu

Research output: Contribution to journalArticle

43 Citations (Scopus)

Abstract

Total L x-ray production cross sections of Y and Sn and M x-ray production cross sections of Au and Bi for proton impact have been measured over the projectile-energy range 3.0-40 MeV and the ionization cross sections obtained for these shells are compared with calculations of the plane-wave Born approximation and the binary encounter approximation. The inner-shell ionizations by close and distant collisions are theoretically discussed in terms of the generalized oscillator strength and the contributions from these two kinds of collisions are separately estimated in the framework of the plane-wave Born approximation. Distant collisions in this energy region are not so effective as in the case of K-shell ionization, while at a very high energy the two kinds of collisions contribute nearly equally to the ionization. The experimental results show good agreement with the plane-wave Born approximation calculation except for the M-shell ionization of Bi.

Original languageEnglish
Pages (from-to)2536-2549
Number of pages14
JournalPhysical Review A
Volume22
Issue number6
DOIs
Publication statusPublished - 1980 Jan 1

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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