臨界減衰定数の英語

臨界安全性監視方法において、中性子計数率が所定値を越えた場合に、中性子パルスの統計的な性質から即発中性子減衰定数を求め、この即発中性子減衰定数と汎用核計算コードシステムにより求めた全遅発中性子割合と即発中性子寿命とから未臨界度を求め、未臨界度が浅くなった場合に警報を発生させる。例文帳に追加

In this nuclear criticality safety monitoring method, when the neutron counting rate exceeds a prescribed value, a prompt neutron attenuation constant is determined from a statistical property of a neutron pulse, and the degree of subcriticality is determined from the prompt neutron attenuation constant, the total delayed neutron ratio and a prompt neutron life determined by a general-purpose nuclear calculation code system, and when the degree of subcriticality becomes low, an alarm is issued. - 特許庁