Computer Studies of Copper Atom Ranges in Copper Lattices
Computer Studies of Copper Atom Ranges in Copper Lattices
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铜晶格中铜原子范围的计算机研究
DOI：
10.1063/1.1702942
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发表时间：
1965
期刊：
影响因子：
--
通讯作者：
J. D. E. D. E. Harrison
中科院分区：
文献类型：
--
作者：
W. L. Gay;J. D. E. D. E. Harrison
我们使用具有 Gibson #2 势的 n 体碰撞计算机模拟模型来检查减速材料的晶格性质影响中等能量铜原子运动的各种方式。对于（110）表面的法向入射，我们发现当 10 keV 铜原子撞击铜晶格的原子时，晶格对散射角有显着影响。沟道面积约占该方向代表性面积的 40%，对高于 1 keV 的铜原子能量相当不敏感。总射程明显长于 Robinson 和 Oen 根据二元碰撞模型计算得出的总射程。低于 1 keV，总射程非常接近 Kornelsen 等人报告的 E32 定律。如果为原子进入通道的初始点指定 A 和 B 的值，则高于 1 keV dE/dx=A−B/E 似乎描述了通道中所有位置的运动。这种高于 1 keV 的行为显然是非物理的......
We have used an n‐body collision computer simulation model with a Gibson #2 potential to examine various ways in which the lattice nature of the slowing down material influences the motion of a medium‐energy copper atom. For normal incidence upon a (110) surface, we found that the lattice has a significant effect upon the scattering angle when a 10‐keV copper atom strikes an atom of a copper lattice. The channel area, which comprises approximately 40% of the representative area in this orientation, is quite insensitive to the copper atom's energy above 1 keV. Total ranges are significantly longer than those reported by Robinson and Oen from calculations based upon a binary collision model. Below 1 keV, total ranges closely approximate the E32 law reported by Kornelsen et al. Above 1 keV dE/dx=A−B/E appears to describe the motion at all positions in the channel if the values of A and B are specified for the initial point at which the atom enters the channel. This behavior above 1 keV is clearly nonphysical...