STOPPING POWER AND STRAGGLING OF AN EXTENDED CHARGE IN A FREE-ELECTRON GAS

被引：6

作者：

BRET, A

机构：

[1] Laboratoire Physique Gaz et Plasma, Université Paris Sud, 91405 Orsay Cedex

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 1994年 / 88卷 / 1-2期

关键词：

D O I：

10.1016/0168-583X(94)96088-7

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The stopping power and straggling of an extended charge distribution at any velocity in a free electron gas are calculated in the RPA approximation at any degeneracy. Asymptotic expressions are given in the low and high velocity range for any charge with spherical symmetry. We pay attention to the determination of the critical distances of pointlike behaviour for a charge and uncorrelated behaviour for two separated charges. The particular cases of the di-cluster and of an ion with extended charge distribution are given particular attention.

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页码：107 / 115

页数：9

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