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The influence of scattering on the total efficiency for point sources in gamma-ray spectrometry
1J. Stefan Institute, Ljubljana, Slovenia.
Biological Trace Element Research
|January 1, 1994
Abstract:
The contribution of gamma-ray scattering to the total efficiency for point-source geometries in a gamma spectrometer was measured. Scattering of gamma-rays on the shield and in the sample was considered. For a 25% efficiency detector in a small shield, about a 1% contribution to the total efficiency was measured, whereas for samples of a few hundred grams, these contributions reached 1-2%. Simple models for description of the effects are presented.