期刊
出版社
ELSEVIER
DOI: 10.1016/j.nima.2023.168826
关键词
Carbon loaded HPGe detector; Detector scanning and characterization; GEANT4; Monte Carlo simulation; Gamma-ray spectroscopy; Low background measurements; Environmental radioactivity; Soil sample analysis
This study presents the development of a low background measurement setup using HPGe detectors for measuring low-level radioactivity. The detector's performance was tested and modeled, and the results were compared with experimental data. The setup can be used to measure radioactive contamination in the environment.
Low background gamma spectrometry employing HPGe detectors is a sensitive technique for measuring low-level radioactivity in environmental applications, material screening, and for rare decay searches. This work presents spectroscopic performance evaluation and modeling of a low background measurement setup developed at IIT Ropar in Punjab, India, to measure trace natural radioactive elements, with a particular interest in studying low-level radioactivity in soil and/or rock samples to generate specific inputs for low background experiments. The performance test and characterization of a low background cryocooled HPGe detector with relative efficiency of 33% have been carried out. An effective detector model has been developed using GEANT4 Monte Carlo simulation to determine the response of the detector over an energy range of 80.9-1408 keV and compared with the experimental performance of the detector. The response of the detector obtained using Monte Carlo simulations agrees reasonably well within 93% level of confidence, indicating only 7% deviation in the comparison. The present setup offers improved detection limits of primordial radionuclides (U/Th and K) to measure radioactive contamination in environmental matrices, which has been used elsewhere (Thakur, 2023).
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据