Nuclear Instruments and Methods
Nuclear Instruments and Methods
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DOI：
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发表时间：
2003
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通讯作者：
J. Salgado
中科院分区：
文献类型：
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作者：
J. Salgado
样品存在于核反应堆的中子场中，会产生局部中子通量的扰动。一般来说，由于热中子和超热中子引起的样品活化的解释需要了解两个校正参数：热中子自屏蔽因子Gth和共振中子自屏蔽因子Gres。利用MCNP程序计算了不同材料（Al, Au, Cd, Co, Cu, Eu, Gd, in, Ir, Mo, Ni, Pt, Pb, Rh, Sc， Sm和Ta）和不同几何形状（箔，线，球和）中的热中子自屏蔽系数。
The presence of a sample in the neutron field of a nuclear reactor creates a perturbation of the local neutron fluxes. In general, the interpretation of the sample activation due to thermal and epithermal neutrons requires the knowledge of two corrective parameters: the thermal neutron self-shielding factor, Gth, and the resonance neutron self-shielding factor, Gres. Thermal neutron self-shielding factors in different materials (Al, Au, Cd, Co, Cu, Eu, Gd, In, Ir, Mo, Ni, Pt, Pb, Rh, Sc, Sm and Ta) and different geometries (foils, wires, spheres and) have been calculated by using the MCNP code.