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Evaluation of HPGe detector efficiency for point sources using virtual point detector model
M A Mohammadi1, M R Abdi, M Kamali
1Department of Physics, Faculty of Science, University of Isfahan, Isfahan 81747-73441, Islamic Republic of Iran.
Abstract:
The concept of a virtual point detector (VPD) has been developed and validated in the past for Ge(Li) and HPGe detectors. In the present research, a new semi-empirical equation involving photon energy and source-virtual point detector distance for the efficiency of point sources by HPGe detectors is introduced , which is based on the VPD model. The calculated efficiencies for both coaxial and off-axis geometries by this equation are in good agreement with experimental data. The estimated uncertainties are less than 4%.
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