Open AccessMonte Carlo simulation of HPGe gamma‐spectrometry systems
Author(s) -
Hou Dongjie,
Guo Siming,
Huang Jianwei,
Wu Chong,
Wu Jinjie
Publication year - 2019
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2018.9185
Subject(s) - monte carlo method , gamma ray spectrometry , semiconductor detector , radionuclide , germanium , physics , computational physics , mass spectrometry , nuclear physics , optics , statistics , radiochemistry , detector , mathematics , chemistry , optoelectronics , quantum mechanics , silicon
In order to obtain the relationship between energy and channel, the suitable radionuclides are chosen to calibrate. The result shows a goodness of fitting. The Monte Carlo simulation about the detection efficiency of the high purity germanium (HPGe) gamma‐spectrometry system was performed. The distance between radioactive source and the end cap is set 15, 20, 25 and 50 cm, respectively. The maximum absolute efficiency locates at around 80 keV. It can be concluded that the absolute efficiency is declining accompany with the increasing of distance. In the end, at the distance of 25 cm, the authors changed thickness of the dead layer and the source distribution to calculate. The maximum absolute efficiency is 8.56E−03, and the relative deviation is 0.0011. Then it was compared with the experimental result provided with the manufacturer. The result of simulation shows a certain agreement with the experimental results. This work will be helpful for calculating the efficiency of HPGe gamma‐spectrometry.