Title

A numerical approach to calculate the full-energy peak efficiency of HPGe well-type detectors using the effective solid angle ratio

Document Type

Article

Abstract

In the field of gamma-ray spectroscopy with HPGe detectors, applied to measurements of activity when the sample to be measured is small and has low radioactivity, the well-type HPGe detectors are widely used. To determine the sample activity, the full-energy peak efficiency is needed. In this work, the efficiency transfer method (ET) in an integral form is proposed to calculate the full-energy peak efficiency and to correct the coincidence summing effect for the HPGe well-type detector. This approach is based on the calculation of the effective solid angles ratio for a well-type detector with a cylindrical source inside and an axial point source outside the detector cavity, taking into account the attenuation of the gamma-rays. The calculated values of the full-energy peak efficiency are found to be in a good agreement with the measured experimental data obtained by using a mixed radionuclide gamma-ray source containing 60Co and 88Y. © 2014 IOP Publishing Ltd and Sissa Medialab srl.

Publication Date

7-1-2014

Faculty

Faculty of Applied Health Sciences Technology

Subject Area

Physical Sciences, General Mathematics, Physics and Astronomy

Indexed in Scopus

yes

Indexed in Web Of Science

yes

DOI

https://doi.org/10.1088/1748-0221/9/07/P07030

Volume

9

Keywords

Detector modelling and simulations I (interaction of radiation with matter, interaction of photons with matter, interaction of hadrons with matter, etc), Gamma detectors, Gamma detectors (scintillators, CZT, HPG, HgI etc), Solid state detectors

eISSN

17480221

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