Calculation of Displacement Damage Based on Average Displacement Kerma Factor Method
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摘要: 根据硅位移kerma函数表,针对传统的基于平均能量的kerma因子取值方法在位移损伤计算中的不足,提出了不同能量中子分群方式下硅位移kerma因子取值的新方法——平均位移kerma因子法。使用该方法计算了几种典型辐射源的位移损伤。结果表明:不同分群方式下,采用平均能量法获得的损伤结果相差17%左右,采用平均位移法得到的损伤结果相差4%左右;采用平均位移法时,群内中子分布模式对损伤结果没有显著影响。Abstract: In view of the present weak points of the conventional average energy kerma factor method,the average displacement kerma factor method calculating the displacement damage in the different energy grouping structure is presented based on Si displacement kerma factor function table.Displacement damage of several radiation sources are calculated with this method.The results show that the discrepancy of dis-placement damage using the average energy method is about 17%,and it is about 4% using the average dis-placement kerma factor method.The results also show that the displacement damage for the different neutron distributions in same energy group do not significantly change with the average displacement kerma factor method.
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Key words:
- Displacement kerma factor /
- Spectrum /
- Displacement damage /
- Average displacement method
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