[3K01-05] Criticality Analysis of Fuel Debris 1

[3K01] Study on criticality judgement under a low neutron count rate condition based on Pál-Mogil’ner-Zolotukhin-Bell-Babala distribution

*Tomohiro Endo¹, Kenichi Watanabe², Manobu Tanaka³ (1. Nagoya Univ., 2. Kyushu Univ., 3. KEK)

Keywords:neutron count, probability distribution, probability generating function, criticality, Pál-Mogil’ner-Zolotukhin-Bell-Babala (PMZBB) distribution

When neutrons are detected under a near-critical condition, the probability distribution of neutron counts follows the Pál-Mogil'ner-Zolotukhin-Bell-Babala distribution. Based on the statistical property, we investigated whether criticality can be determined under a low neutron count rate condition.