title: PGNAA system preliminary design and measurement of In-Hospital Neutron Irradiator for boron concentration measurement.
abstract: A prompt gamma neutron activation analysis (PGNAA) system has been recently developed at the 30-kW research reactor In-Hospital Neutron Irradiator (IHNI) in Beijing. Neutrons from the specially designed thermal neutron beam were used. The thermal flux of this beam is 3.08×10(6) cm(-2) s(-1) at a full reactor power of 30 kW. The PGNAA system consists of an n-type high-purity germanium (HPGe) detector of 40% efficiency, a digital spectrometer, and a shielding part. For both the detector shielding part and the neutron beam shielding part, the inner layer is composed of (6)Li2CO3 powder and the outer layer lead. The boron-10 sensitivity of the PGNAA system is approximately 2.5 cps/ppm. Two calibration curves were produced for the 1-10 ppm and 10-50 ppm samples. The measurement results of the control samples were in accordance with the inductively coupled plasma atomic emission spectroscopy (ICP-AES) results.
authors.affiliation: China Nuclear Industry Beijing 401 Hospital, Beijing 102413, China.
authors.forename: Zizhu
authors.initials: Z
authors.lastname: Zhang
authors.affiliation: China Zhongyuan Engineering Corporation, Beijing 100083, China.
authors.forename: Yizheng
authors.initials: Y
authors.lastname: Chong
authors.affiliation: China Zhongyuan Engineering Corporation, Beijing 100083, China.
authors.forename: Xinru
authors.initials: X
authors.lastname: Chen
authors.affiliation: China Nuclear Industry Beijing 401 Hospital, Beijing 102413, China.
authors.forename: Congjun
authors.initials: C
authors.lastname: Jin
authors.affiliation: China Nuclear Industry Beijing 401 Hospital, Beijing 102413, China.
authors.forename: Lijun
authors.initials: L
authors.lastname: Yang
authors.affiliation: Beijing Capture Technology Limited Co., Beijing 102413, China.
authors.forename: Tong
authors.initials: T
authors.lastname: Liu
mesh_terms: D001895:Boron / Q000032:analysis*; D016754:Boron Neutron Capture Therapy / Q000295:instrumentation*; D004864:Equipment and Supplies; D004865:Equipment and Supplies, Hospital; D005720:Gamma Rays; D009502:Neutrons
chemical_list: D001895:Boron
keywords: BNCT; Boron concentration; IHNI; PGNAA