Validation of Gean4 physics models for nuclear beams in extended media

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS

卷:434

Article

Chen, Junliang^1,2  Yun, Sujun³  Dong, Tiekuang⁴  Ren, Zhongzhou⁵  Zhang, Xiaoping⁶ 

[1] Nanjing Univ, Key Lab Modern Acoust, Nanjing 210093, Jiangsu, Peoples R China

[2] Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China

[3] Nanjing XiaoZhuang Univ, Sch Elect Engn, Hongjing Rd, Nanjing 211171, Jiangsu, Peoples R China

[4] Chinese Acad Sci, Key Lab Dark Matter & Space Astron, Purple Mt Observ, 2 West Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China

[5] Tongji Univ, Sch Phys Sci & Engn, Siping Rd 1239, Shanghai 200092, Peoples R China

[6] Macau Univ Sci & Technol, Lunar & Planetary Sci Lab, Macau, Peoples R China

关键词: Geant4;    Heavy-ion transportation;    Galactic cosmic radiation;   

DOI  :  10.1016/j.nimb.2018.08.022

来源: Elsevier

【 摘 要 】

The physical and biological processes induced by energetic heavy ions in extended media are of great importance for human space exploration and ion therapy. In this paper we check the validity of some nucleus-nucleus inelastic collision models in Geant4 for the transportation of heavy nuclei in materials. The depth-dose distributions of(12)C and(56) Fe beams in extended media and the yields of secondary fragments have been simulated by G4WilsonAbrasion model, G4BinaryLightlon model and G4QMD model. Then the propagation of heavy nuclei through materials used in space industry and the angular distributions of secondary neutrons are also simulated for further validation of the models. By comparing the simulated results with experimental data, it is found that the G4QMD model gives the best results. The implication for estimating the radiation environment on Mars caused by GCRs is also discussed.

【 授权许可】

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