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双层并联碲锌镉探测器制备及性能测试

席发元 宋凤军

席发元, 宋凤军. 双层并联碲锌镉探测器制备及性能测试[J]. 强激光与粒子束, 2018, 30: 096006. doi: 10.11884/HPLPB201830.180072
引用本文: 席发元, 宋凤军. 双层并联碲锌镉探测器制备及性能测试[J]. 强激光与粒子束, 2018, 30: 096006. doi: 10.11884/HPLPB201830.180072
Xi Fayuan, Song Fengjun. Fabrication and performance test of double-layered parallel CdZnTe detector[J]. High Power Laser and Particle Beams, 2018, 30: 096006. doi: 10.11884/HPLPB201830.180072
Citation: Xi Fayuan, Song Fengjun. Fabrication and performance test of double-layered parallel CdZnTe detector[J]. High Power Laser and Particle Beams, 2018, 30: 096006. doi: 10.11884/HPLPB201830.180072

双层并联碲锌镉探测器制备及性能测试

doi: 10.11884/HPLPB201830.180072
基金项目: 

四川省教育厅资助科研项目 15ZA0106

核废物与环境安全国防重点学科实验室预研基金项目 15yyhk12

详细信息
    作者简介:

    席发元(1972—),男,博士,副教授,从事核辐射探测器研究; xify66@163.com

  • 中图分类号: TL816

Fabrication and performance test of double-layered parallel CdZnTe detector

  • 摘要: 实验采用并联方法制备了叠层(双层)碲锌镉探测器,并利用241Am@59.54 keV和57Co@122 keV γ射线源测试了其γ能谱特性。相比单层探测器,对于较高能量的57Co@122 keV γ射线,叠层碲锌镉探测器表现出较高的探测效率和光峰值效率,较好地改善了康普顿连续统一体。叠层CZT探测器较之单层探测器,能谱分辨率发生轻微恶化。实验初步表明,通过并联叠加方法制备叠层碲锌镉探测器是可行的,并可推断制备更大厚度的叠层探测器将有利于中高能γ射线能谱测量。
  • 图  1  并联叠层CZT探测器设计示意图

    Figure  1.  Schematic diagram of parallel stacked CdZnTe (CZT) detector design

    图  2  单层CZT探测器

    Figure  2.  Single layered CZT detector

    图  3  双层CZT探测器

    Figure  3.  Double-layered CZT detector

    图  4  两块单层CZT探测器及叠层CZT探测器的I-V特性图

    Figure  4.  I-V characteristics of two single- layered and one stacked CZT detectors

    图  5  单层及叠层CZT探测器对241Am@59.54 keV γ射线的能谱响应

    Figure  5.  Energy spectrum response of single-layered and stacked CZT detectors to 241Am@59.54 keV γ ray

    图  6  单层及叠层CZT探测器对57Co@122 keV γ射线的能谱响应

    Figure  6.  Energy spectrum response of single-layered and stacked CZT detectors to 57Co@122 keV γ ray

    表  1  单、叠层探测器γ能谱分辨率及全能峰峰区计数率对比

    Table  1.   Comparison of γ spectrum resolution and counting rate at full energy peak area for single- and double- layered detectors

    number of CZT layers γ spectrum resolution/%(241Am) counting rate at full energy peak area/CPS(241Am) γ spectrum resolution/%(57Co) counting rate at full energy peak area/CPS(57Co)
    2 5.53 991 4.49 1308
    1 5.43 987 4.18 909
    下载: 导出CSV
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出版历程
  • 收稿日期:  2018-03-16
  • 修回日期:  2018-06-25
  • 刊出日期:  2018-09-15

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