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arXiv 1101.0887cond-mat.mtrl-sci
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高损伤能α-铁中的级联损伤

Cascades damage in α-iron with high damage energy

Wang Weilu, Liu Wei, Liu Changsong, Fang Qianfeng, Huang Qunying, Wu Yican

摘要:

本文用数值方法研究了级联能量高达250 keV的α-Fe中的级联损伤,对应的中子能量超过14.1MeV。我们观察到Frenkel对产生效率和完整晶格损伤效率在统计不确定度范围内随级联能量的变化趋势接近,两种曲线均先呈幂律下降,在子级联的阈值能量处达到最小值,然后随级联能量的增加开始上升。分析表明,这些曲线的变化趋势反映了缺陷的集中程度,并取决于与缺陷散射一致的子级数目和反映缺陷集中程度的子级能量。对分析技术可以帮助我们理解完整晶格的总损伤。

英文摘要:

We present a numerical study of the cascades damage in α-iron for high cascade energy up to 250keV, corresponding to neutron energy above and beyond 14.1MeV. We observe that Frenkel pairs production efficiency and perfect crystal lattices damage efficiency have the close trend within the statistical uncertainty versus cascade energy, and the two kinds of curves first decrease with power-law trend, and arrive at their minimum at threshold energy of subcascades, then these curves begin to increase with cascade energy. The analysis demonstrates that the tendency of these curves reflects degree of concentration of defects and depends on the number of subcascades which keeps identical with defects scattering and the energy of subcascades reflecting defects concentration. The pair analysis technique may help us understand the total damage of perfect crystal lattices.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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