Cascades damage in α-iron with high damage energy

Details Cascades damage in α-iron with high damage energy Cascades damage in α-iron with high damage energy

2011-01-05

arxiv.org/abs/1101.0887v1

Physics

Condensed Matter

Materials Science

submitted to Plasma Science and Technology; under review

Scientific paper

We present a numerical study of the cascades damage in {\alpha}-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.

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