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叙述了用９０Ｚｒ（ｎ，２ｎ）８９ｍ＋ｇＺｒ和９３Ｎｂ（ｎ，２ｎ）９２ｍＮｂ反应截面比测定Ｄ－Ｔ中子平均能量的方法。用硅探测器对中子平均能量进行监测，测量了６个不同能点的铌锆截面比值，得到了铌锆截面比与中子平均能量的关系曲线。
A method for the determination of the average energy of D-T neutrons using 90Zr (n, 2n) 89m + gZr and 93Nb (n, 2n) 92mNb cross section ratios is described. The neutron average energy was monitored by a silicon detector, and the ratio of niobium zirconium to zirconium was measured at six different energy points. The relationship between the niobium-zirconium section ratio and the average energy of neutron was obtained.