A hybrid method to determine efficiency curve of HPGe detectors


Özben C. Ş. , EMIRHAN E. M.

APPLIED RADIATION AND ISOTOPES, vol.67, no.6, pp.1110-1113, 2009 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 67 Issue: 6
  • Publication Date: 2009
  • Doi Number: 10.1016/j.apradiso.2009.01.085
  • Journal Name: APPLIED RADIATION AND ISOTOPES
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1110-1113
  • Istanbul Technical University Affiliated: Yes

Abstract

A method was developed for determining the efficiency calibration curve of HPGe detectors between 26 and 1770 keV. A simple simulation based on the attenuation of gamma-rays in pure germanium was used together with efficiency calibrations performed for three detector-source distances: 5, 12 and 30 cm. The simple simulation model required an energy dependent term with three parameters and these parameters were determined from the fit of the simulated data to the measured efficiency of the detector. The efficiency response of the detector determined this way was then tested with other certified sources to verify the validity of the method. (C) 2009 Elsevier Ltd. All rights reserved.