Ionization loss of relativistic electrons and its fluctuations in gas proportional counters

K. Nagata, A. Kuge, A. Nakamoto, Nobuyuki Hasebe, J. Kikuchi, T. Doke

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Abstract

Measurements of the ionization loss have been achieved with high accuracy using two proportional counters with sensitive lengths of 9 and 30 cm, filled with Ar+10% CH4 mixture at various pressures (0.13 approximately 2.0 atm). The widths of the ionization loss distributions disagree with those predicted by the Landau (1944) and Blunck-Leisegang (1950) theories, but rather, are in fairly good agreement with those calculated by Ispiryan et al. (1974) using the Monte Carlo method. In traversing thin layers of the counter gas, the most probable energy losses are smaller than those predicted by the Landau formula with the inclusion of the Sternheimer correction for the density effect, but the discrepancy decreases as the thickness of the gas layer increases. Furthermore, both sets of data obtained from the two counters lie almost on the curve of the most probable energy loss plotted against the thickness of the counter gas. The Garibyan and Ispiryan interpretation (1972) seems to provide the best explanation as it takes into account the transition radiation effect.

Original languageEnglish
Article number011
Pages (from-to)1907-1917
Number of pages11
JournalJournal of Physics D: Applied Physics
Volume9
Issue number13
DOIs
Publication statusPublished - 1976
Externally publishedYes

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ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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