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所属单位：材料科学与技术学院

发表刊物：APPLIED RADIATION AND ISOTOPES

关键字：Gamma-ray efficiency calibration Large volumetric sample Effective solid angle Prompt gamma-ray neutron activation analysis

摘要：In this work, a method was proposed for efficiency calibration of HPGe detector employed in a prompt gamma-ray neutron activation analysis (PGNAA) system for large aqueous sample analysis. Experimental measurements of a reference surface gamma-ray source were combined with efficiency transfer method to obtain efficiency of a volumetric source. Then efficiency curve over the energy range 0.5-8.5 MeV were determined with prompt gamma-rays of chlorine. To evaluate the performance of the calibration curve, an internal standard method was used to determine the aqueous sample containing manganese based on the calibration curve. The 7.058 MeV and 7.243 MeV manganese gamma-ray peaks were used to calculate the mass of manganese. The relative deviations of calculated values and actual value were 5.0% and 6.5%, respectively.

ISSN号：0969-8043

是否译文：否

发表时间：2019-03-01

合写作者：Cheng, Can,F70205423,Li, Jiatong,Cai, Pingkun,Zhao, Dong,赵东标,Wei, Zhiyong,魏志勇

通讯作者：黑大千,贾文宝