A numerical approach to calculate the full-energy peak efficiency of HPGe well-type detectors using the effective solid angle ratio
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.
Faculty of Applied Health Sciences Technology
Physical Sciences, General Mathematics, Physics and Astronomy
Indexed in Scopus
Indexed in Web Of Science
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
Badawi, M. S.; Ruskov, I.; Gouda, M. M.; El-Khatib, A. M.; Alotiby, M. F.; Mohamed, M. M.; Thabet, A. A.; and Abbas, M. I., "A numerical approach to calculate the full-energy peak efficiency of HPGe well-type detectors using the effective solid angle ratio" (2014). Faculty of Applied Health Sciences Technology. 11.