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ISSN : 1738-1894(Print)
ISSN : 2288-5471(Online)
ISSN : 2288-5471(Online)
즉발감마선 측정을 위한 HPGe 검출기의 전계수 또는 동시계수모드에서의 광대역 계측효율 보정
Efficiency Calibration of HPGe Detector in Normal ana Coincidence Mode for the Determination of Prompt Gamma-ray
Abstract
Neutron induced prompt gamma-ray spectroscopy(NIPS) system measures the prompt gamma-ray emitting by the interaction of a neutron with various materials. This system will be of great benefit to scientists worldwide, since it provides the non-destructive measurement of many element in either solid or liquid wastes. In this study, the full-energy-peak (FEP) efficiency calibration for a HPGe detector was constructed in the -ray energy range from 80 keV to 8 MeV, using Ba and >TEX>$^{152}Eu$ RI sources and $ ^{35}Cl(n, )^{36}Cl$ thermal neutron captured reaction. The FEP efficiency curve for the higher energies using the $^{35}Cl(n, )^{36}Cl$ reaction was normalized with the curve obtained from the RI sources, since the accurate activity of its prompt -ray is unknown. The average thermal neutron flux was theoretically calculated using the FEP efficiency curve for the KCl standard solutions. The NIPS system equipped with a - coincidence setup with two n-type coaxial HPGe detectors was considered in order to reduce the interfering -ray background. The FEP efficiency curve for the - coincidence system was also obtained for full energy range. The performance of the normal and coincidence NIPS system was tested by comparing signal-to-noise ratio in each mode using the reference sample.e.
Efficiency calibration, Neutron, Prompt gamma-ray, Coincidence, HPGe detector, 광대역 계측효율, 중성자, 즉발감마선, 동시계수, 고순도반도체 검출기
Reference
JNFCWT
Online Submission
Korean Radioactive
Waste Society (KRS)
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