COLLISIONAL MIXING - A 2-STEP COMPUTATIONAL APPROACH

被引：12

作者：

HAUTALA, M

KOPONEN, I

机构：

[1] Department of Physics, University of Helsinki, SF-00170 Helsinki

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 1990年 / 48卷 / 1-4期

关键词：

D O I：

10.1016/0168-583X(90)90171-P

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A new computational approach to collisional mixing is described. Mixing is treated as a random walk process and the slowing down of recoils is treated separately by computer simulation. The method provides relocation cross sections and profiles, and is particularly suitable for studying various effects in marker broadening and marker shift including the role of various generations of recoils. The influences of the first-, second-, third- and higher-order generations are of same order of magnitude on the marker broadening and the shift. Ion-impurity mixing has only little effect on broadening and shift in the studied cases. The calculated ballistic mixing efficiencies are comparable with the experimentally measured mixing efficiencies. The possibility that mixing could be dominated by collisional mixing is discussed. © 1990.

引用

页码：504 / 507

页数：4

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