基于钚特征γ谱的核弹头模板技术可行性研究

Investigation of Template to Authenticate Plutonium Warhead based on γ-ray Spectrum

基于核弹头钚特征γ谱的模板测量技术是深度核裁军核查的重要技术手段之一。以MonteCarlo数值模拟为手段,计算假想核弹头γ射线的输运过程,分析在可能的核查场景中,通过构建基于特征γ谱子能区计数的相对测量的比对匹配算法,分析并建立了由成分匹配和结构匹配组成的核弹头模板测量技术,该方法较好地消除了绝对测量距离误差和时间误差的影响。

The nuclear warhead detecting technology based on a template with y spectrum of Plutonium is an important verification means in the deep irreversible nuclear disarmament. In order to obtain the γ-ray spectra, γ-ray transportation processing for the hypothesis nuclear warhead model has been simulated. In a possible nuclear disarmament verification case, the template matching algorithm based on the relative counts of the explored y spectrum of Plutonium in sub-energy region is built up, and the template technology of nuclear warhead composed of element matching and structure matching is established, This method could eliminate the effect of the error caused by the detecting distance and time.