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《中国物理C》(英文)编辑部
2024年10月30日

Primary Study of Monte Carlo Simulation on CdZnTe Nuclear Detector

  • The Monte Carlo simulation software is developed based on the operating principle of CdZnTe detector, the randomicity of γ ray reaction in the detector and the statistic rule of the amount of electron-hole pairs produced. First, the reaction depth of photons is calculated based on the disintegration rule. Secondly, the reaction section of every reaction is estimated and the reaction probability of the three atoms in CZT and the probability of every reaction of every atom are calculated. Based on these probabilities, the category of atoms and the type of reactions of a photon reacting with the detector are determined and the amount of electron-hole pairs produced by the photon is obtained. From the reaction depth and the amount of electron-hole pairs produced, the amount of charge collected can be calculated.;The response energy spectra of γ ray in the CdZnTe detector are simulated by using the Monte Carlo software developed. The simulation results are well comparable with the data of the real CdZnTe devices. In addition, the ideal thickness of the device, which is of maximum detecting efficiency, is also obtained based on the analysis over the relationship between the thickness and the efficiency, assuming the device to be under the radiation of 57Co source.
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  • [1] .Eisen Y,Shor A.Crystal Growth,1998,184 :13022.Eisen Y.Nucl.Instrum.and Methods,1996,A380 :4313.SANG Wen-Bin,QIAN Yong-Biao,SHI Wei-Ming et al.Journal ofCrystal Growth,2000,214 :30 —344.WANG Lin-Jun,SANG Wen-Bin et al.Nuclear Instruments in PhysicsResearch,2000,A448 :581 —5855.LI Wan-Wan,SANG Wen-Bin et al.Semiconductor Science And Technology,2002,17 :L55 —L586.Eisen Y,Shor A,Mardor I.Nucl.Instrum and Methods,1999,A428 :15847.Arlt R,Rundquist D.Nucl.Instrum.and Methods,1996,A380 :4558.Rossi M.Nucl.Instrum.and Methods,1996,A380 :4199.Amman M,Luke P.Coplanar2grid Detector with Single2electrode Read2out.In :Proceeding of SPIE,1997,3115 :205 —21310.Lee E Y,James B.Nucl.Instrum.and Methods,1999,A428 :6611.Luke P.Nucl.Instr.Meth.Phys.Res.,1996,A380 :232 —23712.Schlesinger T E.Materials Science and Engineering,2001,32 :103 —18913.Manfredotti C,Fizzotti F,Ongaro C et al.Mat.Res.Soc.Symp.Proc.,1993,302 :183 —18814.Lee E Y,Lund J C,Hilton N et al.Mat.Res.Soc.Proc.,1998,487 :537 —54215.HE Z,Knoll G F,Wehe D Ket al.Mat.Res.Symp.Proc.,1998,487 :89 —9416.Redus H,Pantazis J,Huber A et al.Mat.Res.Symp.Proc.,1998,487 :101 —10717.Vizkelethy,Doyle D,Walsh D et al.Nuclear Microprobe Studies of the Electronic Transport Properties of Cadmium Zinc Telluride (CZT) Radi2ation Detectors.In : Proceeding of SPIE,2000,4141 :178 —18518.WEN Wang-Xin,J IN Gen2Ming.HEP NP,2002,26 (11) :1178 —1183 (in Chinese)(文万信,靳根明.高能物理与核物理,2002,26 (11) :1178 —1183)19.James E.Uniformity and Defects in Cadmium Zinc Telluride X-Ray P Gamma-Ray Spectrometers.A Dissertation Submitted to the Faculty ofthe Department of Physics in Partial Fulfillment of the Requirements forthe Degree of Doctor of Philosophy in Applied Physics.Pittsburgh,Pennsylvania : April 1998
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Get Citation
REN Shao-Jun, SANG Wen-Bin, JIN Wei, LI Wan-Wan, ZHANG Qi and MIN Jia-Hua. Primary Study of Monte Carlo Simulation on CdZnTe Nuclear Detector[J]. Chinese Physics C, 2004, 28(2): 191-195.
REN Shao-Jun, SANG Wen-Bin, JIN Wei, LI Wan-Wan, ZHANG Qi and MIN Jia-Hua. Primary Study of Monte Carlo Simulation on CdZnTe Nuclear Detector[J]. Chinese Physics C, 2004, 28(2): 191-195. shu
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Received: 2003-04-30
Revised: 1900-01-01
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Primary Study of Monte Carlo Simulation on CdZnTe Nuclear Detector

    Corresponding author: REN Shao-Jun,
  • School of Materials Science and Engineering,Shanghai University,Shanghai 201800,China

Abstract: The Monte Carlo simulation software is developed based on the operating principle of CdZnTe detector, the randomicity of γ ray reaction in the detector and the statistic rule of the amount of electron-hole pairs produced. First, the reaction depth of photons is calculated based on the disintegration rule. Secondly, the reaction section of every reaction is estimated and the reaction probability of the three atoms in CZT and the probability of every reaction of every atom are calculated. Based on these probabilities, the category of atoms and the type of reactions of a photon reacting with the detector are determined and the amount of electron-hole pairs produced by the photon is obtained. From the reaction depth and the amount of electron-hole pairs produced, the amount of charge collected can be calculated.;The response energy spectra of γ ray in the CdZnTe detector are simulated by using the Monte Carlo software developed. The simulation results are well comparable with the data of the real CdZnTe devices. In addition, the ideal thickness of the device, which is of maximum detecting efficiency, is also obtained based on the analysis over the relationship between the thickness and the efficiency, assuming the device to be under the radiation of 57Co source.

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