L shell ionizations of chlorine and argon by proton and alpha particle bombardments

Nobuhiro Maeda*, Naoto Kobayashi, Hiroshi Hori, Masakatsu Sakisaka

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)


The L Auger electron spectra have been observed for chlorine and argon bombarded with protons and alpha particles of 0.3-2.6 MeV in energy. The satellite lines, which are attributable to a simultaneous M shell ionization, have increased in comparison with the spectra obtained by electron impact. The numbers of created M shell vacancies of argon are estimated as 0.3 ± 0.1 and 1.1 ± 0.4 in average for protons and alpha particles at 1.8 MeV, respectively. The ionization cross sections for both projectiles have been compared with the theory of binary encounter approximation, resulting in a few tens percent reduction for argon and an overestimation for chlorine. The projectile z dependence of ionization cross section has been confirmed for chlorine and argon.

Original languageEnglish
Pages (from-to)1430-1436
Number of pages7
JournalJournal of the Physical Society of Japan
Issue number5
Publication statusPublished - 1976 May
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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