核中子探测器信号负指数时域响应模拟

Negative Exponential Time Domain Response Simulation of Nuclear Neutron Detector Signal

通过叙述探测器输出的时域响应形成过程,分析负指数衰减信号的特征,响应曲线采用高斯滤波,导数寻峰及拉普拉斯变换法相结合,得出峰值和衰减系数的概率密度分布信息,再利用蒙特卡罗方法,仿真出负指数时域响应信号。实验结果表明,该仿真数据相似度高,较好实现了测井数据的优化,可以提高能谱分辨率。

Going through the narrative time domain responses of the detector output and forming process,the analysis of features of negative exponent attenuation signal can be performed.The response curve by gauss filter,derivative for peak and Laplace transform m ethod,the probability density distribution of peak and attenuation coefficient of information can be obtaned,and using monte carlo m ethod,the simulation negative exponential time domain response signal.The experimental results show that the simulation data has high similarity and can better optimize the logging data and improve the spectral resolution.