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实验研究了中子倍增率测量的系统误差。测量了41 cm和46cm慢化剂厚度时的15cm厚铅的中子倍增率。用10cm厚的小CH_2(空心)球检验了实验原理的有效性。实验发现系统的重复性是好的。仔细研究和分析了0.22mm和0.50mm两个不同厚度的~6Li玻璃对中子场的扰动。用1-DANISN程序和ENDF/B-VI库数据计算和重新分析了修正量。
The system error of neutron multiplication measurement was experimentally studied. The neutron doubling rates of 15 cm thick lead were measured at 41 cm and 46 cm moderator thicknesses. The validity of the experimental principle was tested using a small CH 2 (hollow) ball of 10 cm thickness. The experiment found that system repeatability is good. The perturbations of neutron fields on ~ 6Li glass with 0.22mm and 0.50mm thicknesses were carefully studied and analyzed. Corrections were calculated and re-analyzed using 1-DANISN program and ENDF / B-VI library data.