贫化铀及组合球中的反应率测量

Measurement of Reaction Rates in Depleted Uranium and Combined Spheres

摘要: 用HPGe探测器测量了DT中子照射下27Al(n,α)24Na、197Au(n,2n)196Au、93Nb(n,2n)92Nbm和197γ)198Au几个反应在贫化铀、贫化铀/聚乙烯/铁组合球中的活化率。运用MCNP/4B程序和ENDF/B Ⅵ数据库对实验进行了模拟计算,27Al(n,α)24Na、197Au(n,2n)196Au反应的计算与实验结果基本一致,而197Au(n,γ)198Au反应的计算结果与实验结果有相当大的差异。

Abstract: Reaction rates of 27Al(n,α)24Na, 197Au(n,2n)196Au, 93Nb(n,2n)92Nbm,197Au(n,γ)198Au reactions in depleted uranium(DU) and DU/PE/Fe combined spheres bombarded by central DT neutrons were measured with a HPGe detector. Simulation calculation was made using MCNP/4B code and ENDF/BⅥ database. It shows that calculation and experiment results fit well for 27Al(n,α)24Na and 197Au(n,2n)196Au reactions, while calculation and experiment results of 197Au(n,γ)198Au reaction rate are far from agreement.