Original scientific paper

The K - shell fluorescence yield of selenium and the absorption coefficient in the energy region around the K - edge

M. Hribar ; Department of Physics of the University, Ljubljana and Institut J. Stefan, Ljubljana
A. Kodre ; Department of Physics of the University, Ljubljana and Institut J. Stefan, Ljubljana
A. Moljk ; Department of Physics of the University, Ljubljana and Institut J. Stefan, Ljubljana
J. Pahor ; Department of Physics of the University, Ljubljana and Institut J. Stefan, Ljubljana

Abstract

The K-shell fluorescence yield of selenium was investigated by use of a special wall-less proportional counter with methane filling to which small amount of dimethyl selenide was added as fluorescence radiator. In separate experiment absorption coefficient of selenium was measured in the energy region around the K absorption edge. The resulting value for the K-shell fluorescence yield of selenium amounts to ω_k = 0.605 ± 0.005. The values obtained for the photoelectric absorption coefficient at the K-edge are (𝜏/e)_K = (170 ± 1) cm2/g and (𝜏 /e)_K' = (22.3 ± 0.2) cm 2/g respectively and consequently the K-jump is S_k = 7.61 ± 0.06.

Keywords

Hrčak ID:

321991

URI

https://hrcak.srce.hr/321991

Publication date:

3.12.1973.

Article data in other languages: slovenian

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