中子核反应中反冲核的平均射程

Average ranges of recoil nuclides in the neutron reaction

用活化法测量了快中子核反应中反冲核在靶中的平均射程，发现不同的核反应（ｎ，２ｎ），（ｎ，ｐ），（ｎ，ａ）和（ｎ，ｎｐ）中的反冲核的平均射程存在系统性规律，导出了经验公式。此外，把理论公式计算的结果同实验结果进行了比较，并给出了修正的理论计算公式。

Average ranges of recoil nuclides in the target materials induced by fast neutronreactions have been measured by the activation method. A systematic trend ofaverage range was found for (n,2n), (n, a ), (n,p) and (n,np) reactions. An empiricalformula was presented to describe the experimental results. Moreover, the calculatedresults based on theoretical formula were compared with the experimental results. Arevised formula was deduced from the present work.