Impact-parameter dependent energy loss of screened ions

被引：56

作者：

Azevedo, GD

Grande, PL

Schiwietz, G

机构：

[1] Univ Fed Rio Grande do Sul, Inst Fis, BR-91501970 Porto Alegre, RS, Brazil

[2] Hahn Meitner Inst Berlin GmbH, Bereich F, D-14109 Berlin, Germany

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2000年 / 164卷

关键词：

D O I：

10.1016/S0168-583X(99)01074-5

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We describe a simple model for the electronic energy loss as a function of the impact parameter for screened projectiles at high velocities. The physical inputs are the projectile screening potential, the electronic density and the oscillators strengths for the target electrons. An excellent agreement with full first-order Born calculations is obtained. The results are then used to compute the angular dependence of the electronic energy loss under channeling conditions. (C) 2000 Elsevier Science B.V. All rights reserved.

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页码：203 / 211

页数：9

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