Development and testing of a delayed gamma-ray spectroscopy instrument utilizing Cf-252 neutrons evaluated for nuclear safeguards applications

Rodriguez, D. ; Abbas, K.*; Koizumi, Mitsuo ; Nonneman, S.*; Rossi, F. ; Takahashi, Tone

Under the MEXT subsidy on research for improving nuclear security related development, we designed the Delayed Gamma-ray Californium Test (DGCT) instrument. From He-3 count-rate experiments performed in collaboration with the European Commission Joint Research Centre, we show the effective neutron flux entering the sample space. Further, we show delayed gamma-ray spectra of both U and Pu samples as well as a comparison to the background from Cf activation of the environment. Finally, we make comparisons to earlier spectra obtained using PUNITA, including relative fission capability, spectral signature, and mass correlations.

Language	:	English
Journal	:	Nuclear Instruments and Methods in Physics Research A
Volume	:	1014
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Pages	:	p.165685_1 - 165685_10
Publication Year/Month	:	2021/10
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Paper URL	:	https://doi.org/10.1016/j.nima.2021.165685
DOI for research data	:	Link to research data related to this paper/report.
Keywords	:	Delayed Gamma Radiation; Instrumentation; Safeguards; Fission Products; fissile nuclides
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Registration No. : AA20210042
JAEA Abstracts No. : 50000386
Paper Submission No. : 25137

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