使用GEANT系统通过蒙特卡罗方法确定伽马射线剂量率
Monte Carlo determination of gamma-ray dose rate with the GEANT system.
作者信息
Likar A, Vidmar T, Pucelj B
机构信息
J. Stefan Institute and Department of Physics, University of Ljubljana, Slovenia.
出版信息
Health Phys. 1998 Aug;75(2):165-9. doi: 10.1097/00004032-199808000-00007.
Conversion factors for the dose rate 1 m above the ground level from the measured activities for different gamma-ray emitters in soil are calculated using the Monte Carlo method. The calculations are based on the GEANT system developed at CERN, Geneva. Results for the uniform and surface distribution of the emitters in the soil are given for gamma-ray energies in the interval between 20 keV and 3 MeV. They are similar to those of the recent report of ICRU that indicates that GEANT system is suitable for application in health physics problems. For 137Cs the dose rates for plane sources at different depths are given, which allow for the calculation of the dose rate for any depth distribution of the activity in the soil.
利用蒙特卡罗方法，根据土壤中不同γ射线发射体的测量活度，计算了地面以上1米处剂量率的转换因子。计算基于日内瓦欧洲核子研究组织（CERN）开发的GEANT系统。给出了土壤中发射体均匀分布和表面分布时，20 keV至3 MeV能量区间内γ射线的结果。这些结果与国际辐射单位与测量委员会（ICRU）最近的报告结果相似，表明GEANT系统适用于健康物理问题。对于137Cs，给出了不同深度平面源的剂量率，这有助于计算土壤中活度任何深度分布的剂量率。
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