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A New static and dynamic one-point equation and analytic and numerical calculations for a subcritical system

未臨界体系に対する新しい一点炉式の導出と、解析的及び数値的な計算

西原 健司; 岩崎 智彦*; 宇田川 豊*

Nishihara, Kenji; Iwasaki, Tomohiko*; Udagawa, Yutaka*

核分裂中性子数のバランスに基づいた新しい一点炉式を導出した。本式は従来のkeffを含む一点炉式と同じ形式を持っている。本式に現れる変数は核分裂中性子数と遅発中性子先行核数であり、係数は即発,遅発及び源中性子の増倍度である。これらの変数と係数はそれぞれ明確な物理的意味を有している。また、本式の解析的,決定論的及び確率論的な計算を、加速器駆動炉について行った。

A new one-point equation is derived according to the balance of the fission neutrons. The equation has the same form as the conventional equation containing keff. The variables of the equation are the number of the fission neutrons and the delayed neutron precursors, and the coefficients are the multiplication factors of a prompt fission neutron, a delayed neutron and a source neutron. In the equation derived here, all variables and coefficients have each clear physical meaning. Analytic, deterministic and probabilistic calculations of the equation are performed for an accelerator-driven system.

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パーセンタイル:29.96

分野:Nuclear Science & Technology

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