在高压倍加器上进行了69Ga(n,2n)68Ga反应截面测量实验。实验采用d-T中子源,样品是由氧化镓粉末压制的薄片,参考截面采用93Nb(n,2n)92Nbm反应截面,Nb样品为金属样品(图1)。将两片Nb样品贴在Ga样品的两边放置在与入射粒子束成0o的方向上进行辐照,辐照时间为 The 69Ga (n, 2n) 68Ga reaction cross section measurement experiment was carried out on the high voltage doubler. Experiments using d-T neutron source, the sample is gallium oxide powder pressed sheet, the reference section using 93Nb (n, 2n) 92Nbm reaction cross section, the Nb sample is a metal sample (Figure 1). Two Nb samples were placed on both sides of the Ga sample placed in the direction of the incident particle beam into the 0o irradiation, the irradiation time