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7231075 
Journal Article 
PGNAA system preliminary design and measurement of In-Hospital Neutron Irradiator for boron concentration measurement 
Zhang, Z; Chong, Y; Chen, X; Jin, C; Yang, L; Liu, T; , 
2015 
Yes 
Applied Radiation and Isotopes
ISSN: 0969-8043 
PERGAMON-ELSEVIER SCIENCE LTD 
OXFORD 
106 
161-165 
English 
26242556 
WOS:000366954100036 
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. 
BNCT; IHNI; PGNAA; Boron concentration 
16th International Congress on Neutron Capture Therapy (ICNCT) 
Helsinki, FINLAND