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Production rates of cosmogenic nuclei on the lunar surface
Dong Tie-Kuang1; Yun Su-Jun2; Ma Tao1; Chang Jin1; Dong Wu-Dong3; Zhang Xiao-Ping3,4; Li Guo-Long4; Ren Zhong-Zhou4,5
Source PublicationCHINESE PHYSICS C
AbstractA physical model for Geant4-based simulation of the galactic cosmic ray (GCR) particles' interaction with the lunar surface matter has been developed to investigate the production rates of cosmogenic nuclei. In this model the GCRs, mainly very high energy protons and alpha particles, bombard the surface of the Moon and produce many secondary particles, such as protons and neutrons: The energies of protons and neutrons at different depths are recorded and saved as ROOT files, and the analytical expressions for the differential proton and neutron fluxes are obtained through the best-fit procedure using ROOT software. To test the validity of this model, we calculate the production rates of the long-lived nuclei Be-10 and Al-26 in the Apollo 15 long drill core by combining the above differential fluxes and the newly evaluated spoliation reaction cross sections. Our numerical results show that the theoretical production rates agree quite well with the measured data, which means that this model works well. Therefore, it can be expected that this model can be used to investigate the cosmogenic nuclei in future lunar samples returned by the Chinese lunar exploration program and can be extended to study other objects, such as meteorites and the Earth's atmosphere.
KeywordCosmogenic Nuclei Geant4 Spallation Reaction
WOS HeadingsScience & Technology ; Physical Sciences
Indexed BySCI
WOS Research AreaPhysics
WOS SubjectPhysics, Nuclear ; Physics, Particles & Fields
WOS IDWOS:000339228400012
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Document Type期刊论文
Affiliation1.Chinese Acad Sci, Purple Mt Observ, Key Lab Dark Matter & Space Astron, Nanjing 210008, Jiangsu, Peoples R China
2.Nanjing XiaoZhuang Univ, Nanjing 211171, Jiangsu, Peoples R China
3.Macau Univ Sci & Technol, Space Sci Inst, Taipa, Macau, Peoples R China
4.Nanjing Univ, Dept Phys, Nanjing 210008, Jiangsu, Peoples R China
5.Natl Lab Heavy Ion Accelerator, Ctr Theoret Nucl Phys, Lanzhou 730000, Peoples R China
Recommended Citation
GB/T 7714
Dong Tie-Kuang,Yun Su-Jun,Ma Tao,et al. Production rates of cosmogenic nuclei on the lunar surface[J]. CHINESE PHYSICS C,2014,38(7):0.
APA Dong Tie-Kuang.,Yun Su-Jun.,Ma Tao.,Chang Jin.,Dong Wu-Dong.,...&Ren Zhong-Zhou.(2014).Production rates of cosmogenic nuclei on the lunar surface.CHINESE PHYSICS C,38(7),0.
MLA Dong Tie-Kuang,et al."Production rates of cosmogenic nuclei on the lunar surface".CHINESE PHYSICS C 38.7(2014):0.
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