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放射性同位素伽玛源准直照射辐射场模拟研究

黄宇晨 钱易坤 冯鹏 刘易鑫 张颂 何鹏 魏彪 毛本将 朱亚地

黄宇晨, 钱易坤, 冯鹏, 等. 放射性同位素伽玛源准直照射辐射场模拟研究[J]. 强激光与粒子束, 2021, 33: 036002. doi: 10.11884/HPLPB202133.200294
引用本文: 黄宇晨, 钱易坤, 冯鹏, 等. 放射性同位素伽玛源准直照射辐射场模拟研究[J]. 强激光与粒子束, 2021, 33: 036002. doi: 10.11884/HPLPB202133.200294
Huang Yuchen, Qian Yikun, Feng Peng, et al. Simulation of radiation field from isotopic gamma source collimation[J]. High Power Laser and Particle Beams, 2021, 33: 036002. doi: 10.11884/HPLPB202133.200294
Citation: Huang Yuchen, Qian Yikun, Feng Peng, et al. Simulation of radiation field from isotopic gamma source collimation[J]. High Power Laser and Particle Beams, 2021, 33: 036002. doi: 10.11884/HPLPB202133.200294

放射性同位素伽玛源准直照射辐射场模拟研究

doi: 10.11884/HPLPB202133.200294
基金项目: 国家自然科学基金青年基金项目(11805111);国防科工局研究课题
详细信息
    作者简介:

    黄宇晨(1995—),男,硕士研究生,从事辐射屏蔽防护研究;710934794@qq.com

    通讯作者:

    冯 鹏(1981—),男,博士,副教授,从事核信号检测技术及其应用研究;coe-fp@cqu.edu.cn

  • 中图分类号: TL72

Simulation of radiation field from isotopic gamma source collimation

  • 摘要: 针对各向同性伽玛源参考辐射场尺寸关键技术问题,GB/T 12162系列标准虽然进行了相关规定,但是该规定并未对准直照射状态下照射室尺寸提出具体要求。为减小用于辐射检测或监测类仪器仪表检定与量值校准时伽玛参考辐射场内散射影响,本文采用蒙特卡罗方法,研究了同位素放射源准直照射时,照射室尺寸变化对检验点处的剂量率值与能量分布的影响情况,获得了准直照射时伽玛辐射场照射室尺寸的边界条件,建立并完善了伽玛参考辐射场边界研究方法及相关标准细节,为准直照射状态下照射室尺寸设计提供了一种新方法或途径。
  • 图  1  伽玛辐射场装置图

    Figure  1.  Gamma radiation device

    图  2  伽玛辐射场装置示意图

    Figure  2.  Schematic illustration of gamma radiation device

    图  3  伽玛辐射场MCNP模拟图

    Figure  3.  MCNP simulation diagram of gamma radiation field

    图  4  探测器引起137Cs源辐射场剂量率分布变化

    Figure  4.  Changes in dose rate distribution of 137Cs source radiation field brought by the introduction of detector

    图  5  探测器引起60Co源辐射场剂量率分布变化

    Figure  5.  Changes in dose rate distribution of 60Co source radiation field brought by the introduction of detector

    图  6  伽玛辐射场D2值变化影响

    Figure  6.  Influence of various D2 in gamma radiation field

    图  7  照射室宽高变化影响

    Figure  7.  Influence of irradiation chamber width and height variation

    图  8  辐射场空间平方反比关系图

    Figure  8.  Inverse squared attenuation law diagram of radiation field

    表  1  放射性核素的比活度及推荐的化学形态

    Table  1.   Specific activity and recommended chemical form of radionuclides

    radionuclidespecific activity/(Bq·kg−1recommended chemical form
    60Co0.31metal
    137Cs0.079chloride
    下载: 导出CSV

    表  2  探测器厚度变化影响一览表

    Table  2.   Influence of detector thickness (aluminum shell thickness T)

    T/mmdose rate/(mSv·h−1 influence rate/%
    CsCoCsCo
    4.0 39.821 74.548 −1.87 −1.78
    8.0 38.951 73.216 −4.02 −3.54
    9.2 38.71 72.546 −4.61 −4.42
    9.3 38.557 72.336 −4.99 −4.70
    9.4 38.518 72.278 −5.08 −4.77
    9.5 38.45 72.158 −5.25 −4.93
    9.6 38.395 72.095 −5.39 −5.02
    16.0 36.999 70.071 −8.83 −7.68
    28.0 33.872 65.288 16.53 13.98
    40.0 30.698 60.527 24.35 20.26
    下载: 导出CSV

    表  3  伽玛辐射场D1值变化影响一览表

    Table  3.   Influence of various D1 in gamma radiation field

    D1/cmdose rate/(mSv·h−1 influence rate/%
    CsCoCsCo
    10 38.644 72.56 −4.77 −4.40
    20 21.727 40.807 −4.82 −4.42
    30 13.898 26.103 −4.87 −4.47
    40 9.646 18.117 −4.92 −4.53
    50 7.082 13.308 −4.98 −4.54
    54 6.336 11.905 −5.00 −4.57
    55 6.168 11.589 −5.01 −4.57
    60 5.419 10.184 −5.05 −4.59
    70 4.28 8.043 −5.08 −4.63
    80 3.464 6.511 −5.15 −4.69
    下载: 导出CSV

    表  4  伽玛辐射场D2值变化影响一览表

    Table  4.   Influence of various D2 in gamma radiation field

    D2/cmdose rate/(mSv·h−1 influence rate/%
    CsCoCsCo
    2.4 7.006 12.604 5.05 1.04
    2.5 7.001 12.597 4.96 0.98
    5 6.87 12.455 3.00 −0.16
    10 6.698 12.275 0.43 −1.60
    25 6.483 12.054 −2.81 −3.37
    50 6.389 11.96 −4.21 −4.13
    100 6.352 11.922 −4.76 −4.43
    126 6.347 11.916 −4.84 −4.48
    下载: 导出CSV

    表  5  照射室宽高变化影响一览表

    Table  5.   Influence of irradiation chamber width and height variation

    width by height/(cm×cm)dose rate/(mSv·h-1 influence rate/%
    CsCoCsCo
    400×300 6.9703 12.563 4.51 0.71
    100×100 6.9785 12.572 4.63 0.78
    60×60 6.9961 12.589 4.89 0.91
    56×56 6.9999 12.593 4.95 0.95
    54×54 7.0046 12.595 5.02 0.96
    40×40 7.0651 12.66 5.93 1.48
    20×20 8.3402 14.58 25.05 16.87
    下载: 导出CSV

    表  6  伽玛辐射场D3值变化影响一览表

    Table  6.   Influence of various D3 in gamma radiation field

    D3/cmdose rate/(mSv·h−1 influence rate/%
    CsCoCsCo
    1 7.0009 12.594 4.97 0.95
    4 7.0008 12.594 4.96 0.95
    6 7.0007 12.594 4.96 0.95
    8 7.0006 12.594 4.96 0.95
    10 7.0006 12.594 4.96 0.95
    12 7.0005 12.594 4.96 0.95
    14 7.0004 12.594 4.96 0.95
    16 7.0004 12.594 4.96 0.95
    下载: 导出CSV

    表  7  辐射场空间平方反比变化一览表

    Table  7.   Inverse squared attenuation law changes of radiation field

    D/cmdose rate/(mSv·h−1influence rate/%
    CsCoCsCo
    detectorno detectordetectorno detectordetectorno detectordetectorno detector
    25 58.437 58.443 109.3 109.28 4.61 0.01 4.31 0.02
    30 40.581 40.615 75.902 75.91 4.54 0.08 4.27 0.01
    40 22.827 22.916 42.695 42.766 4.25 0.39 4.12 0.17
    50 14.609 14.772 27.325 27.472 3.59 1.12 3.78 0.54
    60 10.145 10.434 18.976 19.254 2.01 2.85 2.95 1.47
    63 9.202 9.548 17.211 17.547 1.16 3.76 2.49 1.95
    64 8.917 9.286 16.678 17.036 0.84 4.14 2.31 2.15
    65 8.645 9.037 16.169 16.551 0.48 4.54 2.12 2.36
    66 8.385 8.803 15.682 16.092 0.09 4.99 1.86 2.61
    67 8.136 8.583 15.218 15.656 0.36 5.49 1.65 2.88
    70 7.454 8 13.941 14.483 1.95 7.33 0.74 3.89
    74 6.67 7.392 12.475 13.202 4.96 10.83 0.95 5.83
    下载: 导出CSV
  • [1] 徐阳. 移动式小尺度参考辐射的Monte Carlo模拟及应用研究[D]. 重庆: 重庆大学, 2016: 13-21.

    Xu Yang, Simulation study on a minitype reference radiation with Monte Carlo method and its application[D].Chongqing: Chongqing University, 2016: 13-21
    [2] G/BT 12162.1-2000, 用于校准剂量仪和剂量率仪及确定其能量相应的X和γ参考辐射第1部分: 辐射特性及产生方法[S].

    G/BT 12162.1-2000, X and gamma reference radiation for calibrating dosemeters and doserate meters and for determining their response as a function of photon energy—Part 1 : Radiation characteristics and production methods[S]
    [3] ISO 4037-1: 1996, X and gamma reference radiation for calibrating dosemeters and doserate meters and for determining their response as a function of photon energy—Part 1: Radiation characteristics and production methods[S].
    [4] 徐阳, 魏彪, 刘易鑫, 等. 同位素铯源小尺度参考辐射蒙特卡罗模拟研究[J]. 原子能科学技术, 2017, 51(3):522-528. (Xu Yang, Wei Biao, Liu Yixin, et al. Monte Carlo simulation research of 137Cs minitype reference radiation[J]. Atomic Energy Science and Technology, 2017, 51(3): 522-528 doi: 10.7538/yzk.2017.51.03.0522
    [5] 高飞, 肖雪夫, 倪宁, 等. 全景γ参考辐射场中散射辐射的蒙特卡罗模拟[J]. 同位素, 2013, 26(2):110-114. (Gao Fei, Xiao Xuefu, Ni Ning, et al. Monte Carlo simulation of scattered radiation of free-Field geometries gama reference radiation field[J]. Journal of Isotopes, 2013, 26(2): 110-114 doi: 10.7538/tws.2013.26.02.0110
    [6] 徐阳, 魏彪, 毛本将, 等. 基于蒙特卡罗的小尺度参考辐射装置屏蔽研究[J]. 强激光与粒子束, 2016, 28:096004. (Xu Yang, Wei Biao, Mao Benjiang, et al. Shielding research of minitype reference radiation device based on Monte Carlo simulation[J]. High Power Laser and Particle Beams, 2016, 28: 096004 doi: 10.11884/HPLPB201628.160018
    [7] Smith B, Matthews K, Hill W, et al. An electronically—collimated gamma-ray detector for intraoperative localization of radiation sources[J]. Medical Physics, 2006, 33(6): 2277-2277.
    [8] 何庆驹, 李飞, 温自强. 蒙特卡罗软件对伽玛射线屏蔽性的研究[J]. 无线互联科技, 2018(17):12-14. (He Qingju, Li Fei, Wen Ziqiang. Research on gamma ray shielding effectiveness by Monte Carlo software[J]. Wireless Internet Technology, 2018(17): 12-14 doi: 10.3969/j.issn.1672-6944.2018.17.006
    [9] 王贵林, 柳敏华, 王成国, 等. γ射线照射量标准装置的建立[J]. 中华放射医学与防护杂志, 1998(3):57-59. (Wang Guilin, Liu Minhua, Wang Chengguo, et al. Establishment of γ-ray exposure standard device[J]. Chinese Journal of Radiological Medicine and Protection, 1998(3): 57-59
    [10] Smith B, Matthews K L, Lackie A, et al. An electronically-collimated gamma-ray detector for localization of radiation sources[C]//IEEE Nuclear Science Symposium Conference Record. 2006: 257-263.
    [11] 王光德. 放射性钴源生产应用现状及进展[C]//中国核学会学术年会. 2017.

    Wang Guangde. Production and application progress of the radioactive cobalt source[C]//Progress Report on China Nuclear Science & Technology. 2017
    [12] 高飞, 肖雪夫, 倪宁. 固定式环境γ辐射剂量率仪现场校准技术[J]. 原子能科学技术, 2015(2):212-217. (Gao Fei, Xiao Xuefu, Ni Ning. On-site calibration technology for fixed environmental gamma radiation rate meter[J]. Atomic Energy Science and Technology, 2015(2): 212-217 doi: 10.7538/yzk.2015.49.02.0212
    [13] 刘晖, 邵文成. 137Cs辐射场中空气比释动能率的探讨[J]. 牡丹江教育学院学报, 2008(4):121-122. (Liu Hui, Shao Wencheng. Discussion on the specific kinetic energy of air in Cs-137 radiation field[J]. Journal of Mudanjiang College of Education, 2008(4): 121-122 doi: 10.3969/j.issn.1009-2323.2008.04.062
    [14] Nikolaou M E, Spyrou G, Panayiotakis G, et al. Design studies of collimated gamma ray sources[C]//2000 IEEE Nuclear Science Symposium Conference. 2000: 20-100.
    [15] 高飞, 肖雪夫, 侯金兵, 等. 60Co 单源照射装置的蒙特卡罗方法优化设计[J]. 原子能科学技术, 2014, 48(3):523-527. (Gao Fei, Xiao Xuefu, Hou Jinbing, et al. Optimal design of 60Co single source radiation facility with Monte Carlo method[J]. Atomic Energy Science and Technology, 2014, 48(3): 523-527 doi: 10.7538/yzk.2014.48.03.0523
    [16] Kumar A, Dong M G, Sayyed M I, et al. Gamma-ray shielding effectiveness of lead bismuth germanoborate glasses[J]. Glass Physics & Chemistry, 2018, 44(4): 292-299.
    [17] Leake J W. The effect of ICRP (74) on the response of neutron monitors[J]. Nuclear Instruments & Methods in Physics Research A, 1999, 421(1/2): 365-367.
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出版历程
  • 收稿日期:  2020-10-27
  • 修回日期:  2021-01-22
  • 网络出版日期:  2021-03-30
  • 刊出日期:  2021-03-05

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