在目前的氘氚中子发生器源中子分析过程中，固体氚靶中氚浓度深度分布信息的缺失是普遍遇到的问题。为解决此问题，本文建立了利用伴随粒子能谱反演氚浓度深度分布的模型，采用来自氚钛靶的α实验能谱作为模型测试对象，通过该模型获得了氚钛靶中氚浓度深度分布的数据。结果表明，氚浓度随氚钛靶深度的增加呈双峰趋势，两峰之间的氚浓度波谷位于靶中0.94μm处，该深度正是入射氘粒子的射程极限。所得的氚浓度深度分布趋势与其他实验方法测量结果相符，表明该模型能为氘氚中子发生器的源中子分析提供即时的氚浓度深度分布信息。%Currently in the analysis of source neutron of D‐T neutron generator ,the lack of the information of the depth profile of tritium concentration in solid tritide target is a common problem .To overcome this problem ,a inversion model to study the depth pro‐file of tritium concentration in the source target using the associated alpha spectrum was built ,the reported alpha spectrum from T (d ,n)4 He reaction was used as a test input for the model ,and the depth profile of tritium concentration in titanium tritide target was acquired .The results show that the depth profile of the tritium concentration in the titanium tritide target presents bimodal distribution ,and the tritium concentration bot‐tom between two peaks locates at 0.94 μm of target thickness ,which is the range limit of the inject deuterium ions .The similar trend was found in the available research using others techniques .T he presented method can provide real‐time depth profile of tritium concentration to source neutron analysis of the D‐T neutron generator .
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