COMPUTER STUDIES OF 180-DEGREES NE NEUTRAL ATOMS BACKSCATTERED FROM A PT(111) SURFACE

被引：10
作者：
TAKEUCHI, W
YAMAMURA, Y
机构：
[1] Okayama University of Science, Okayama, 700
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 1992年 / 72卷 / 3-4期
关键词：
D O I：
10.1016/0168-583X(92)95130-J
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
The 180-degrees neutral impact-collision ion scattering spectroscopy (NICISS) intensity has been evaluated using the ACOCT program code based on the binary collision approximation. The computer simulations are performed for the case of 2 keV Ne+ ions incident along the (112BAR] direction of a Pt(111) surface. It is found that there are the influences of not only first or second layer atoms at the surface but also several layer atoms below the surface on the 180-degrees Ne NICISS intensity. Also, the ACOCT results show that the Moliere approximation of the Thomas-Fermi potential with a reduced Firsov screening length multiplied by a factor of 0.85 and the vertical component of surface Debye temperature 143 K are suitable for the 180-degrees Ne NICISS intensity at the Pt(III) surface.
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页码：363 / 368
页数：6
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