Total cross sections for positron scattering on argon and krypton at intermediate and high energies

被引：23

作者：

Karwasz, GP ^{[1
]}

Barozzi, M ^{[1
]}

Brusa, RS ^{[1
]}

Zecca, A ^{[1
]}

机构：

[1] Univ Trent, INFM, Dipartmento Fis, I-38050 Povo, TN, Italy

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2002年 / 192卷 / 1-2期

关键词：

D O I：

10.1016/S0168-583X(02)00857-1

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Preliminary total cross section data for positron scattering on argon and krypton between 250 and 5000 eV are presented. A Ramsauer-type apparatus, previously used for electron-scattering measurements has been modified. To check for the convergence between electron and positron total cross sections, a semiempirical analysis has been applied. The analysis for argon indicates an asymptotic convergence for electron and positron projectiles - the high energy parameters of the both fits are equal within the uncertainty limits. No such a clear conclusion is possible with the present data up to 5000 eV for krypton. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：157 / 161

页数：5

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