An approach to evaluate the efficiency of γ-ray detectors to determine the radioactivity in environmental samples

作     者：Mohamed.S.Badawi Ahmed.M.El-Khatib Samah.M.Diab Sherif.S.Nafee Ekram.A.El-Mallah 

作者机构：Physics Department Faculty of Science Alexandria University 21511 Alexandria Egypt 

出 版 物：《Chinese Physics C》 (中国物理C（英文版）)

年 卷 期：2014年第38卷第6期

页      面：60-66页

核心收录：

学科分类：0709[理学-地质学] 07[理学] 0708[理学-地球物理学] 0804[工学-仪器科学与技术] 0827[工学-核科学与技术] 0703[理学-化学] 0704[理学-天文学] 070202[理学-粒子物理与原子核物理] 0702[理学-物理学] 

主　　题：y-ray detector efficiency efficiency transfer effective solid angles radioactive source 

摘      要：This work provides an approach to determine the efficiency of T-ray detectors with a good accuracy in order to determine the concentrations of either naturally occurring or artificially prepared radionuclides. This approach is based on the efficiency transfer formula （ET）, the effective solid angles, the self- absorptions of the source matrix, the attenuation by the source container and the detector housing materials on the detector efficiency. The experimental calibration process was done using radioactive （Cylindrical ＆ Marinelli） sources, in different dimensions, that contain aqueous 152Eu radionuclide. The comparison point to a fine agreement between the experimental measured and calculated efficiencies for the （NaI ＆ HPGe） detectors using volumetric radioactive sources.