【作者】 刘跃进； 李伟； 白鸽； 韩路长； 曹阳；

【Author】 Liu Yuejin Li Wei Bai Ge Han Luchang Cao Yang (College of Chemical Engineering,Xiangtan University,Xiangtan 411105,China)

【机构】 湘潭大学化工学院；

【摘要】 基于137Csγ射线七NaI(T1)探测器均一化测量响应曲线,提出并建立了均一化探测γ射线负累积分布与密度分布两种响应模型,所建立的偏高斯密度分布模型与多项式模型同时模拟了γ射线脉冲高能段和康普顿效应低能段的响应规律,对模型参数做了敏感性分析。该模型可用于137Csγ射线CT多探测线路的均一化识别与检验。更多还原

【Abstract】 Based on seven NaI(Tl) detectors’ synchronous measurement response curves for 137Csγray,two response function models of both negative accumulative distribution and density distribution are proposed and established.The response characteristic of both high energy impulse and compton effect agree well with partial Gaussian function model and polynomial model established in this paper with the seven NaI(Tl) multi-detection circuits.The sensitivity parameters that have much influence on the response density function are discussed.The established density distribution response model can be used to distinguish and examine the synchronous of 137Csγray multi-detection circuits.更多还原