Based on the high energy γ-ray yield from the H-bomb D-T fusion reaction, it brings forward the idea applying the 16.76 MeV γ-ray to judge whether the H-bomb happens or not, and to deduce the explosion TNT equivalen...Based on the high energy γ-ray yield from the H-bomb D-T fusion reaction, it brings forward the idea applying the 16.76 MeV γ-ray to judge whether the H-bomb happens or not, and to deduce the explosion TNT equivalent accurately. The Monte Carlo N-Particle was applied to simulate the high energy γ-ray radiation characteristics reaching the geosynchronous orbit satellite, and the CVD diamond detector suit for the requirements was researched. A series of experiments were carried out to testify the capabilities of the diamond detector. It provides a brand-new approach to satellite-based nuclear explosion detection.展开更多
文摘能谱处理算法是提升探测系统能量分辨率的重要方法之一。其中,种子局部平均(seeded localized averaging,SLA)算法是一种比较新颖的处理算法,采用平均计算的方式对多个道址的信号进行处理输出,但在处理对称双峰及偏峰时会出现峰位飘移及生成不存在的虚峰等问题。针对该问题通过赋予不同的权重、引入均值不等式和优化迭代参数等改进方法,提出了一种基于概率密度函数迭代的加权平均变换(weighted average transform,WAT)算法,利用概率密度函数模型描述探测器的随机输入信号,在对符合设定分布的随机输入信号累积处理过程中,利用加权平均的计算方式来处理信号。WAT算法保留了SLA算法原有的性质,还提高了非对称峰输入的能量分辨率,进一步提高了原始输入分布的适应性,解决了SLA算法处理时双峰输入后出现虚峰及重合峰等问题,偏峰处理将半高宽由741改善为435,峰位未飘移且未出现虚峰。利用WAT算法,对输入信号为高斯分布、对数高斯分布及多峰分布的情况进行数值模拟,验证了WAT算法用于能谱求解的有效性。
文摘Based on the high energy γ-ray yield from the H-bomb D-T fusion reaction, it brings forward the idea applying the 16.76 MeV γ-ray to judge whether the H-bomb happens or not, and to deduce the explosion TNT equivalent accurately. The Monte Carlo N-Particle was applied to simulate the high energy γ-ray radiation characteristics reaching the geosynchronous orbit satellite, and the CVD diamond detector suit for the requirements was researched. A series of experiments were carried out to testify the capabilities of the diamond detector. It provides a brand-new approach to satellite-based nuclear explosion detection.
