Chao Peng, Zhifeng Lei, Zhangang Zhang, Shaohua Yang, Ping Lai, Guoguang Lu. Measurement and simulation of terrestrial atmospheric neutron spectrum in typical regions of China[J]. High Power Laser and Particle Beams, 2023, 35(5): 059001
- High Power Laser and Particle Beams
- Vol. 35, Issue 5, 059001 (2023)
Fig. 1. Schematic diagram of Bonner sphere spectrometer
Fig. 2. Field measurement of atmospheric neutron spectrum
Fig. 3. Measured atmospheric neutron spectra at different locations
Fig. 4. Atmospheric neutron differential flux as a function of energy at different measurement sites calculated by EXPACS model
Fig. 5. Comparison between calculated results and measured data of atmospheric neutron spectrum
Fig. 6. Atmospheric environment modeling in Monte Carlo transport simulations
Fig. 7. Primary galaxy cosmic ray particle spectra used in Monte Carlo simulations
Fig. 8. Atmospheric neutron spectra at different altitudes obtained by Monte Carlo simulations
Fig. 9. Comparison of atmospheric neutron spectra obtained from field measurement, EXPACS model calculation and Monte Carlo simulation in Guangzhou
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Table 1. Location information of atmospheric neutron spectrum measurement
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Table 2. Probability of inelastic interaction between different particles and atmospheric atoms in cascade reaction process
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Table 3. Generation probability of secondary particles in inelastic interactions
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