Molecular dynamics studies of temperature effects on low energy helium bombardments on tungsten surfaces
Molecular dynamics studies of temperature effects on low energy helium bombardments on tungsten surfaces
复制标题
低能氦轰击钨表面温度效应的分子动力学研究
DOI:
10.1016/j.jnucmat.2012.01.008
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发表时间:
2012-04
影响因子:
3.1
通讯作者:
Qing Hou
中科院分区:
文献类型:
--
作者:
Min Li;Jun Wang;Qing Hou
MD simulations have been conducted to study the effect of temperature on low energy (<200eV) helium bombardments on tungsten surfaces. The reflection coefficients, energy distributions and depth distributions of helium atoms were calculated at various time points. Collisions between helium atoms and target atoms are found to be the main mechanism for the reflection of the helium atoms before 0.2ps, after which the thermal movement of the atoms is found to play the dominant role. An important temperature effect is that increasing temperature may induce a rapid slowing down of incident helium atoms. This effect makes the reflection energy distributions quite different from those that are predicted without accounting for temperature effects. Moreover, the helium atoms thermally moving to the substrate surface are found to be hindered to escape from the surface, and the accumulation of the helium atoms near the surface may occur.
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影响因子:
3.7
作者:
Q. Hou;M. Hou;L. Bardotti;B. Prével;P. Mélinon;A. Pérez
通讯作者:
Q. Hou;M. Hou;L. Bardotti;B. Prével;P. Mélinon;A. Pérez
DOI:
10.1016/j.nimb.2007.11.056
发表时间:
2008-04
影响因子:
1.3
作者:
K. Nordlund
通讯作者:
K. Nordlund
影响因子:
3.7
作者:
Derlet, P. M.;Nguyen-Manh, D.;Dudarev, S. L.
通讯作者:
Dudarev, S. L.
影响因子:
3.1
作者:
J. Coad;D. Hole;E. Kolodinska;J. Likonen;S. Lindig;G. Matthews;M. Mayer;V. Philipps;V. Riccardo;A. Widdowson;J. Contributors
通讯作者:
J. Coad;D. Hole;E. Kolodinska;J. Likonen;S. Lindig;G. Matthews;M. Mayer;V. Philipps;V. Riccardo;A. Widdowson;J. Contributors
DOI:
10.1016/0168-583x(92)95409-k
发表时间:
1991
期刊:
--
影响因子:
--
作者:
W. Eckstein
通讯作者:
W. Eckstein