Calculation of the absolute peak efficiency of gamma-ray detectors for different counting geometries

L. Moens, J. De Donder, Lin Xi-lei, F. De Corte, A. De Wispelaere, A. Simonits, J. Hoste

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Abstract

A new technique is outlined for the calculation of the full-energy peak efficiency of cylindrical gamma-detectors, including coaxial Ge(Li) detectors. Different source geometries are considered, i.e. point, disk and cylindrically shaped sources. Full account is taken of gamma attenuation in the source and in any interjacent absorbing layer. No simplifying mathematical model is adopted and no Monte Carlo calculations are required. Although this method is to be qualified as semi-empirical, the experimental work involved in it is simple and of common practice in most nuclear laboratories. For the calculations a FORTRAN IV + computer program is presented on a VAX 11/780 machine.

Original languageEnglish
Pages (from-to)451-472
Number of pages22
JournalNuclear instruments and methods
Volume187
Issue number2-3
DOIs
Publication statusPublished - Aug 15 1981

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ASJC Scopus subject areas

  • Medicine(all)

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