Modelling of W-Be mixed material sputtering under D irradiation

被引：8

作者：

Lasa, A. ^{[1
]}

Schmid, K. ^{[2
]}

Nordlund, K. ^{[1
]}

机构：

[1] Univ Helsinki, Dept Phys, Assoc Euratom Tekes, FI-00014 Helsinki, Finland

[2] Max Planck Inst Plasma Phys, D-85748 Garching, Germany

来源：

PHYSICA SCRIPTA | 2014年 / T159卷

关键词：

tungsten; beryllium; deuterium; sputtering; atomistic simulations; fusion reactor materials; ITER; DEUTERIUM RETENTION; TUNGSTEN; BOMBARDMENT; SIMULATION; EROSION; CARBON; LAYERS;

D O I：

10.1088/0031-8949/2014/T159/014059

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present an atomistic study on the D irradiation on W-Be mixtures, including a comparison between molecular dynamics (MD) and binary collision approximation methods. We compared the D reflection and Be erosion yields after the non-cumulative D impacts, concluding that both methods agree qualitatively, but low-energy irradiation related chemical effects can be recognized in MD. We also followed the evolution of W-Be mixtures under cumulative D irradiation. At low energies, the surface deuterates, quickly saturating the D reflection and suppressing the Be erosion.

引用

页数：5

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