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所属单位：航天学院
发表刊物：NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
关键字：PGNAA D-T neutron generator Bulk sample analysis Neutron self-shielding correction
摘要：A prompt gamma-ray neutron activation analysis (PGNAA) facility has been developed for the determination of elements in bulk samples. The basic design of the PGNAA facility is composed of three major components: A deuterium-tritium neutron generator, the neutron moderator and reflector, and a high-purity germanium detector. The Monte Carlo code was used to select materials of moderator and optimize geometrical size of the facility. Then the PGNAA facility was built based on the simulation results. The bulk aqueous samples containing chlorine and cadmium were analyzed with the facility. The neutron self-shielding effect of the bulk aqueous samples was also corrected. The results showed the minimum detectable concentration (MDC) of chlorine and cadmium were 2.58 +/- 0.78 g/L and 0.05 +/- 0.01 g/L, respectively. For mixture sample analysis, the relative deviations of calculated value and actual value for chlorine and cadmium were 5.1% and 2.0%, respectively.
ISSN号：0168-583X
是否译文：否
发表时间：2019-08-01
合写作者：Cheng, Can,F70205423,贾文宝,Sun, Aiyun,Li, Jiatong,Cai, Pingkun,Zhao, Dong,赵东标,Shan, Qing,凌永生
通讯作者：魏志勇,黑大千