【摘要】 基于在相同的中子辐照条件下,裂变数与裂变核素的数量成正比的原理,利用加速器14 MeV中子源研究了裂变室镀层重量的相对定量方法,介绍了实验布置及所获得的定量结果。将部分定量结果与其α定量结果进行比较,差异小于1%,证明该方法用于裂变室镀层重量的测定可行,定量结果的不确定度约为2%~4%。更多还原

【Abstract】 Under the same neutron radiation conditions,fission counts are proportional to the number of fission nuclei.Based on this concept,a relative quantifying method has been developed to measure the mass of fission plate in fission chamber on a 14 MeV accelerator neutron source at the Neutron Physics Laboratory,INPC,CAEP.The experimental assembly was introduced and mass of the fission material in several fission chambers was measured.The results by this method agree well(within 1%) with the α-quantifying method Therefore,it is absolutely feasible to quantify the fission plate mass in fission chambers.The measurement uncertainty is 2%~4%.更多还原