ON THE TREATMENT OF LIGHT-ION ELECTRONIC STOPPING IN DENSE MATTER

被引：12
作者：
SCHIWIETZ, G [1 ]
GRANDE, PL [1 ]
机构：
[1] UNIV RIO GRANDE SUL, INST FIS, RIO GRANDE, BRAZIL
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 1994年 / 90卷 / 1-4期
关键词：
D O I：
10.1016/0168-583X(94)95501-8
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
A review is given on single-electron mechanisms and the corresponding theoretical approaches describing the electronic energy-transfer processes of light ions in gases and solids. Special emphasis is given to a discussion on the connection between exact Bloch-wave treatments and free-atom approximations. In the case of solids, perturbation theory is applied to the stopping of low-energy ions in the alkaline metals Li and Na. These calculations include Bloch wavefunctions of the Wigner-Seitz type obtained from a Hartree-Fock-Slater calculation and allow for a prediction of the mean energy loss under channeling conditions. Results of the most widely used local-density approximation are compared to data of our more complete perturbative treatment. Comparison is also made with recent LCAO calculations.
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页码：10 / 19
页数：10
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