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使用蒙特卡罗直接模拟法模拟了300keV氘束流T（d，n）4He中子源发出的中子在球壳屏蔽体介质铁中的输运规律。分析了不同介质厚度的铁对中子的反射性质和吸收性质，这些解释和分析对快中子球壳屏蔽参数的选取具有重要价值。
The Monte Carlo direct simulation method was used to simulate the transport of neutrons emitted by the 300 keV deuterium beam T (d, n) 4He neutron source in the medium of the spherical shell shield. The reflection properties and absorption properties of iron neutron with different media thickness are analyzed. These explanations and analyzes are of great value to the selection of shielding parameters of fast neutron spherical shells.