基于PGNAA技术对地雷探测的MOCA模拟及能谱分析
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摘要
使用MOCA程序模拟基于PGNAA技术的地雷探测过程并对可行性进行讨论.利用自主研制的NG-9型中子发生器搭建整套地雷探测系统,LYSO作为γ探测器,对埋藏在含5%水分土壤中反坦克地雷的位置范围进行三维测量确定.结果表明,以C元素特征峰作为主要探测判据,对质量为3.46kg反坦克地雷探测,MOCA程序构造的探雷装置最大探测深度为9cm,从地面扫描确定地雷位置精度高,可作为地雷探测的一种有效手段.
MOCA simulation based on the PGNAA technology on the feasibility of mine detect process was discussed.The system of mine detection was built by the self-made NG-9 neutron generator and used LYSO as gamma detector in the system.The 3 Dposition range of anti-tank mines buried in 5% moisture soil was determined.The results showed that for a 3.46 kg anti-tank mine,taking the characteristic peaks of C element as the main criterion,the maximum detectable depth using the mine detection system structured by MOCA code was 9 cm.The high positional accuracy of mine scanning from above the ground could be used as an effective method in mine detection.
MOCA simulation based on the PGNAA technology on the feasibility of mine detect process was discussed.The system of mine detection was built by the self-made NG-9 neutron generator and used LYSO as gamma detector in the system.The 3 Dposition range of anti-tank mines buried in 5% moisture soil was determined.The results showed that for a 3.46 kg anti-tank mine,taking the characteristic peaks of C element as the main criterion,the maximum detectable depth using the mine detection system structured by MOCA code was 9 cm.The high positional accuracy of mine scanning from above the ground could be used as an effective method in mine detection.
引文
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[2] YANG Jianbo,YANG Yigang,LI Yuanjing,et al.Monte-Carlo simulation of cement neutron field distribution characteristics in PGNAA[J].Nuclear Science and Techniques,2012,23(6):337-343.
[3]李向龙.中子物料多元素含量快速检测方法的研究[D].长春:东北师范大学,2015.
[4]李德红,苏桐龄.中子活化分析原理及应用简介[J].大学物理,2005(6):56-58.
[5]杨丽芳,高翔.应用MOCA程序设计煤料PGNAA实验装置[J].同位素,2018,31(2):93-98.
[6]庞敏,李韶荣,马良义,等.利用PGNAA方法对煤质进行检测的MOCA模拟研究[J].物理实验,2017,37(11):52-55.
[7]贾文宝,陈晓文,徐爱国,等.利用蒙卡程序MOCA模拟研究BGO探测器的γ响应谱//中国核学会.中国核科学技术进展报告-中国核学会2009年学术年会论文集(第一卷·第9册)[C].中国核学会,2009:262.
[8] Ling Yongsheng,Jia Wenbao,Hei Daqian,et al.A new Am-Be PGNAA setup for element determination in aqueous solution[J].Applied Radiation and Isotopes,2015(95):233-238.
[9]韩毅,陈法国,于伟跃,等.中子屏蔽材料研究现状[J].材料导报,2015,29(S2):483-488.
[10] JIA WenBao,HEI DaQian,CHENG Can,et al.Optimization of PGNAA set-up for the elements detection in aqueous solution[J].Science China(Technological Sciences),2014,57(3):625-629.
[11] LIU Yuren,LU Yunxin,XIE Yali,et al.Development and applications of an on-line thermal neutron prompt-gamma element analysis system[J].Nuclear Science and Techniques,1991(2):71-78.
[12]卢毅,宋朝晖.瞬发伽马中子活化分析技术发展现状[J].核电子学与探测技术,2013,33(12):1527-1531.
[13]张兰芝,倪邦发,田伟之,等.瞬发γ射线中子活化分析的现状与发展[J].原子能科学技术,2005(3):282-288.
[14]贾文宝,黑大千,单卿.PGNAA技术在国内煤炭行业中应用现状及问题//中国核科学技术进展报告(第二卷)——中国核学会2011年学术年会论文集第9册(核医学分卷、核技术工业应用分卷)[C].中国核学会,2011:156.
[15] Miri-Hakimabad H,Panjeh H,Vejdani-Noghreiyan A.Experimental optimization of alandmine detection facility using PGNAA method[J].Nuclear Science and Techniques,2008(19):109-112.
[16] Miri-Hakimabad H,Vejdani-Noghreiyan A,Panjeh H.Improving the moderator geometry of an anti-personnel landmine detection system[J].Applied Radiation and Isotopes,2008(66):606-611.
[17]蒋舟.基于PGNAA技术的土壤中浅层掩埋爆炸物检测研究[D].南京:南京航空航天大学,2017.
[18] Khan H,Koreshi Z U,Yaqub M.The sensitivity studies of a landmine explosive detection system based on neutron backscattering using monte carlo simulation[J].Nuclear Technology&Radiation Protection,2017,32(1):37-43.
[19]景士伟,杨璐,李文杰,等.利用中子技术检测爆炸物的实验研究[J].东北师大学报(自然科学版),2008,40(2):47-50.