【摘要】 在对实验数据分析、评价的基础上 ,研究了 1 4MeV中子 (n ,α)反应截面的系统学特性 ,给出了截面的系统学公式σn ,α=(A1/3 + 1 ) 2 αexp[β(N -Z + 1 ) /A].利用给出的公式 ,计算了从13 9La到180 Hf的中等和重质量核的 1 4.7MeV中子的 (n ,α)截面 ,为聚变技术的研究提供了一定参考数据 .更多还原

【Abstract】 The systematic characters of the (n,α) reaction cross sections have been studied. The systematic formulae of the reaction cross sections are obtained as σ n,α =(A 1/3 +1) 2α exp [β(N-Z+1)/A] . A set of fitting empirical parameters by using the least square method are extracted. For the (n,α) reactions, α and β values are 1 390.099 and -54.024 respectively. The (n,α) reaction cross sections of some nuclei are calculated by using the set of empirical parameter, and a good agreement with existing data is obtained.更多还原