Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8209561 | Applied Radiation and Isotopes | 2015 | 5 Pages |
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 3.08Ã106Â cmâ2Â sâ1 at a full reactor power of 30Â 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 6Li2CO3 powder and the outer layer lead. The boron-10 sensitivity of the PGNAA system is approximately 2.5Â cps/ppm. Two calibration curves were produced for the 1-10Â 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.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Radiation
Authors
Zizhu Zhang, Yizheng Chong, Xinru Chen, Congjun Jin, Lijun Yang, Tong Liu,