水下核探测系统耐压壳厚度与水层γ能量衰减模拟计算及测试验证  

Simulation Calculation and Test Verify for γ Ray Attenuation in Water and Pressure Shell Based on Undersea Nuclear Detector

作　　者：胥建国 叶伟城 陈登科 李乐[1] 郑宁宁 邹宇斌[2] 曹文田[2] 吴泇俣 XU Jian-guo;YE Wei-cheng;CHEN Deng-ke;LI Le;ZHENG Ning-ning;ZOU Yu-bin;CAO Wen-tian;WU Jia-yu(Troops 92609 of PLA,Beijing 100077,China;State Key Laboratory of Nuclear Physics and Technology,Peking University,Beijing 100871,China)

机构地区：[1]中国人民解放军92609部队,北京100077 [2]核物理与核技术国家重点实验室(北京大学),北京100871

出　　处：《核电子学与探测技术》2021年第5期873-878,共6页Nuclear Electronics & Detection Technology

摘　　要：在水下核探测系统设计中,耐压壳厚度及水层距离大小对于探测器的探测效率有一定影响。基于MCNPX模拟计算,设定特定条件下的γ连续谱叠加特征γ能量^(16)O(n,p)^(16)N、^(54)Mn,^(60)Co,分析了几种不同体积探测器对γ能量的响应,以及对不同厚度水层和铁耐压壳的衰减,并按照实际计算的物理模型设计实验,采用°Co、SMnγ源进行实验验证。结果表明,模拟计算和实验测量结果相符。The efficiency of nuclear detector is variation with the thickness change of pressure shell and water distance in the process of design on undersea nuclear detector.In this work,the simulation model based on MCNPX code of analysis and calculation on undersea nuclear detector is setting up.Import the characteristic gamma ray of the^(16)O(n,p)^(16)N、^(54)Mn,^(60)Co adding continuous spectrum in the model.The energy response variation with the several kinds of volume nuclear detector,water distance and pressure shell thickness are analyzed.The experiment of test verify for the characteristic gamma ray attenuation in water and pressure shell is done with^(60)Co、^(54)Mn.The experimental result is in accord with simulation calculation based on MCNPX code.

关 键 词：模拟计算 核探测器 测试验证 

分 类 号：TL81[核科学技术—核技术及应用]