14MeV中子穿过组合材料引发^(238)U绝对裂变率的测量

Absolute Fission Rate Measurement of ^(238)U Induced by 14 MeV Neutrons Penetrated Composite Material

为检验计算方法与参数 ,用小型平板铀裂变室测量了铁球壳表面沿赤道方向不同位置 1 4MeV中子穿透实验模型后引起的2 38U绝对裂变反应率 ,并与MCNP/4A和ENDF/B V库数据计算结果相比较。实验总误差为 6.1 %。

In order to prove the model calculation method and parameter, the 238U absolute fission rate in the case of 14 MeV neutrons penetrating through the special compo-site material was measured by minitype slab uranium fission chambers. The measuring spots are distributed in the surface of iron ball hull along the different position of equator. The calculated results are compared with the experiment results. The total error of measured 238U absolute fission rate is 6.1%.