| This thesis is based on the project of "The Study of Radial Field and Environmental on the Air-Ground Interface" , financed by National Natural Science Foundation of China (NO: 40374051).This thesis discusses the origin of the natural y ray. After investigating the current condition about the applications of Monte Carlo Method in nuclear radiation and studying the distribution of natural radial Y energy spectrum and the principle of the interaction of the y photons, the random sampling simulation models for Monte Carlo Method are established. The Monte Carlo simulation software for forecasting y energy spectrum is made by the visualized program visual C++. Using the software the thesis simulates 10 kinds of nuclides with 24 kinds of energy y rays in 4 kinds of natural example, they are nature stratum (with the nuclide' s content U:3×10-6g/g, Th: 10× 10-6g/g, K: 1. 7%) ; U mine (with the nuclide' s content U: 100×10-6g/g, Th: 10×10-6g/g, K:3%); Th mine (with the nuclide' s content U:5×10-6g/g, Th: 1000×10-6g/g, K:1%); K mine (with the nuclides' s content U:3×10-6 g/g, Th:8× 10-6g/g, K:10%). The results are the original energy spectrum on the interface of Air-Ground and the NaI(Tl) crystal detector response energy spectrum. The results show that the spectrum radiated by the γ radial is consecutive and the energies of the spectrum are... |
PDF Full Text Request