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MC法模拟计算石墨空腔电离室壁修正因子

Simulation of Graphite Cavity Ionization Chamber Wall Correction Factor by MC Method
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摘要 为探讨石墨空腔电离室壁修正因子的确定方法,本文利用MC模拟计算方法对美国国家空气比释动能基准组中的NIST10cm3和NIST30cm3球形石墨空腔电离室的壁修正因子进行了计算模拟.实验采用60Co和137 Csγ作为射线源,进行“等效壁厚”模拟以及MC直接计算模拟.两种模拟方法得到的计算结果与NIST发布的值相差均在0.1%内.本次实验的结论为“等效壁厚”模拟方法与直接计算模拟方法经验证均能作为壁修正因子的确定方法. In order to explore the method for determining the correction factor of the graphite cavity ionization chamber w all,in this paper,the MC simulation method is used to calculate the wall correction factor of NISTlOcm3 and NIST30cm3 spherical graphite cavity ionization chambers in the national air kerma benchmark group.Co60 and Cs13/7 were used as radiation sources in the experim ent,Performing“equivalent wall thickness”simulation and MC direct calculation simulation.The calculated results of the two simulation methods are within 0.1%of the values published by NIST.The conclusion of this experiment is that both the“equivalent wall thickness”simulation method and the direct calculation simulation method can be verified as the determination method of the wall correction factor.
作者 任国月 吴金杰 王波 白占国 REN Guo-yue;WU Jin-jie;WANG Bo;BAI Zhan-guo(Hebei University of Science and Technology,Shijiazhuang 050000,China;National Institute of Metrology,Beijing 100029,China)
出处 《核电子学与探测技术》 CAS 北大核心 2020年第1期115-118,共4页 Nuclear Electronics & Detection Technology
基金 环境水平X射线空气比释动能测量方法研究,25-AKY1707。
关键词 等效壁厚蒙卡模拟 蒙卡直接计算模拟 壁修正因子 EGSNRC equivalent wall thickness of monte carlo sim ulation monte carlo direct calculation sim ulation wall correction factor EGSnrc
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  • 1胡家成,杨小元,杨元第,张辉,樊铁栓,孙吉宁,黄斐增,刘鉴常,叶卫国.球-圆柱形空腔电离室壁修正因子的实验测量[J].计量学报,2007,28(z1):256-260. 被引量:2
  • 2韩奎初.测量照射量(空气比释动能)的空腔电离室[J].核标准计量与质量,1995,0(1):33-35. 被引量:3
  • 3胡家成,杨小元,杨元第,樊铁栓,黄斐增,刘鉴常,孙吉宁,叶卫国.球形石墨空腔电离室壁修正因子的测量与验证[J].中华放射医学与防护杂志,2005,25(6):561-564. 被引量:5
  • 4Rogers DWO,Bielajew AF.Wall attenuation and scatter corrections for ion chambers:measurements versus calculations.Phys Med Biol,1990,35:1065-1078.
  • 5Rogers DWO,Bielajew AF,Nahum AE.Ion chamber response and Awall correction factors in a ^60 Co beam by Monte Carlo simulation.Phys Med Biol,1985,30:429-443.
  • 6Bielajew AF.Correction factors for thick-walled ionization chambers in point-source photon beams.Phys Med Biol,1990,35:501-516.
  • 7Bielajew AF.On the technique of extrapolation to obtain wall correction factors for ion chambers irradiated by photon beams.Med Phys,1990,17:583-587.
  • 8Bielajew AF,Rogers DWO.Implications of new correction factors on primary air kerma standards in ^60Co beams.Phys Med Biol,1992,37:1283-1291.
  • 9Rogers DWO,Treurniet J.Monte carlo calculated wall and axial nonuniformity corrections for primary standards of air kerma.NRCC Report PIRS-663,1999.
  • 10Laitano RF,Toni MP,Pimpinella M,et al.Determination of the Kwall correction factor for a cylindrical ionization chamber to measure air-kerma in ^60Co Gamma Beams.Phys Med Biol,2002,47:2411-2431.

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