Calculation of Neutron Source Strength from Secondary Neutron Source in PWRs
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摘要: 根据压水堆中二次中子源的产生机理建立了二次中子源源强计算方法。采用MCNP程序模拟计算了二次中子源组件中的核反应率(与产生中子相关)和中子注量率,得到了123Sb的平均辐射俘获截面和放射性活度到二次源源强的转换因子,相关参数可用于快速计算二次中子源源强。Abstract: Based on the theory of neutron release from the secondary neutron source, the calculation method for the neutron source strength was built. MCNP was used to calculate the reaction rate and neutron flux in the secondary neutron source assembly, and the average radioactive capture cross section of 123 Sb and the transform coefficient from radioactive activity to neutron source strength were obtained.
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Key words:
- Secondary neutron source /
- Source strength /
- MCNP
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