Abstract
Empirical and semiempirical formulations for calculating the full energy peak efficiency (FEPE) of Ge detectors are reviewed. By comparing the predictions of these formulae with experimental data obtained from an 86 cm 3 Ge(HP) crystal, it is found that the most precise predictions, over the largest possible energy range, are obtained using the semiempirical formula of Hajnal and Klusek [Nucl. Instr. and Meth. 122 (1974) 559]. Mean deviations of 1.8% were recorded over the energy range 59.6–3253.6 keV. The calculated efficiency curve was found to be in good agreement with Monte Carlo calculations.
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