14MeV中子在贫化铀球中造钚率的实验数据模拟分析

摘要

根据已开展的14 MeV中子在φ600mm贫化铀球中的造钚率实验,使用MCNP5程序对实验结果及其影响因素进行数值模拟分析.结果表明:B-Ⅵ版的uresa库和endf66c库对造钚率的模拟结果与实验结果相符;管道的空腔效应、靶室结构材料和水层的屏蔽散射效应及大厅本底中子等因素对造钚率影响较小.%According to the measurement of plutonium production rates resulting from 14 MeV neutrons in depleted uranium sphere, the experimental results and influencing factors were simulated and analyzed with MCNP5 code. It shows that simulant plutonium production rates from uresa and endf66c agree very well with experimental results,simulant effects on plutonium production rates by cavity, construction materials and water lays and background neutrons etc., are slight.