中国物理B ›› 2009, Vol. 18 ›› Issue (6): 2217-2222.doi: 10.1088/1674-1056/18/6/019

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Monte Carlo simulation of exposure factor

张涛1, 刘义保1, 杨波2, 吴和喜2, 顾金虎2   

  1. (1)Key Laboratory of Nuclear Resources and Environment (East China Institute of Technology), Ministry of Education, Nanchang 330013, China;School of Nuclear Engineering and Technology, East China Institute of Technology, Fuzhou 344000, China; (2)School of Nuclear Engineering and Technology, East China Institute of Technology, Fuzhou 344000, China
  • 收稿日期:2008-10-08 修回日期:2008-11-07 出版日期:2009-06-20 发布日期:2009-06-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 10647109), the Foundation for Key Program of Ministry of Education, China (Grant No 208067).

Monte Carlo simulation of exposure factor

Zhang Tao(张涛)a)b), Liu Yi-Bao(刘义保)a)b)†, Yang Bo(杨波)b), Wu He-Xi(吴和喜)b), and Gu Jin-Hu(顾金虎)b)   

  1. a Key Laboratory of Nuclear Resources and Environment (East China Institute of Technology), Ministry of Education, Nanchang 330013, China; b School of Nuclear Engineering and Technology, East China Institute of Technology, Fuzhou 344000, China
  • Received:2008-10-08 Revised:2008-11-07 Online:2009-06-20 Published:2009-06-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 10647109), the Foundation for Key Program of Ministry of Education, China (Grant No 208067).

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摘要： In this paper, we simulate the exposure factor by a simple model of a free-air ionization chamber with the Monte Carlo programme Geant4. Special emphasis is placed on the discussion of the exposure factor related to parameters of the chamber model. The reason for the variation in exposure factor with incident ray energy is also analysed in terms of reaction cross section for different types of reactions. The obtained results indicate that our simulation is accurate in the calculation of the exposure factor and can serve as a reference in designing air ionization chambers.

关键词: exposure factor, Geant4, Monte Carlo simulation, free-air ionization chamber

Abstract: In this paper, we simulate the exposure factor by a simple model of a free-air ionization chamber with the Monte Carlo programme Geant4. Special emphasis is placed on the discussion of the exposure factor related to parameters of the chamber model. The reason for the variation in exposure factor with incident ray energy is also analysed in terms of reaction cross section for different types of reactions. The obtained results indicate that our simulation is accurate in the calculation of the exposure factor and can serve as a reference in designing air ionization chambers.

Key words: exposure factor, Geant4, Monte Carlo simulation, free-air ionization chamber

中图分类号:  (Gas-filled counters: ionization chambers, proportional, and avalanche counters)

  • 29.40.Cs
29.50.+v (Computer interfaces)