| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2015: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2013: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
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| Outline of Final Research Achievements |
Delayed neutron noise analysis combined with pulsed neutron source was newly proposed and experiments and analysis were carried out for development of illicit nuclear material amount detection system. Since a research reactor in Kyoto University could not operate during this research period because of inspection by Nuclear Regulation Authority, neutron noise and gamma-ray noise analysis experiments based on variance to mean ratio method were carried out using subcritical system with natural uranium and Cf neutron source. Through those experiments, variation of nuclear material amount could be detected by neutron noise analysis, and moreover, combination of neutron and gamma-ray noise analysis was effective for increase detection efficiency for illicit hidden neutron material. Another experimental method by detection of neutron energy was also examined and it was found that this new method could be adopted for illicit nuclear material detection.
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