Type: Article

Evaluation of HPGe detector efficiency for point sources using virtual point detector model

Journal: Applied Radiation and Isotopes (09698043)Year: February 2011Volume: 69Issue: Pages: 521 - 526

Mohammadi M.A.Abdi M.^aKamali M.^a Mostajaboddavati M. Zare M.R.

a :University of Isfahan - IRAN(IR) - Isfahan

DOI:10.1016/j.apradiso.2010.10.024Language: English

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%. © 2010.