Angular distribution of electrons behind barriers comparable to the extrapolated range

V. I. Boiko, V. V. Evstigneev

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A study is reported of the angular distribution of monoenergetic electrons from a betatron which have traversed barriers of Al, Cu, and Pb with thicknesses reaching the extrapolated range. The initial electron energy is in the range 3-8 MeV. The experimental results agree well with Monte Carlo calculations carried out for identical calculations and with the results of earlier work for smaller barriers. The half-width of the electron angular distribution, increasing with increasing barrier thickness, reaches a nearly constant value, while the distribution itself corresponds to the laws of complete diffusion, i. e., converts into a distribution similar to cos2Θ. As the thickness of the absorbers is increased further, the half-width decreases and the distribution becomes narrower, due to the penetration far into the absorbers of electrons which have been scattered predominantly in the forward direction.

Original languageEnglish
Pages (from-to)623-625
Number of pages3
JournalSoviet Physics Journal
Issue number5
Publication statusPublished - May 1975

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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