Integral and differential elastic collision cross-sections for low-energy Ar+ ions with neutral Ar atoms

被引：23

作者：

Barata, J. A. S. ^{[1
]}

机构：

[1] Univ Beira Interior, Dept Fis, P-6201 Covilha, Portugal

[2] Univ Coimbra, Dept Fis, Ctr Instrumentacao, Unidade 21794, P-3004 Coimbra, Portugal

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2007年 / 580卷 / 01期

关键词：

elastic scattering; symmetric charge transfer; intermolecular potentials;

D O I：

10.1016/j.nima.2007.05.012

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Integral and differential elastic collision cross-sections for Ar+ ions with neutral Ar atoms are calculated using modified Tang and Toennies ion-atom interaction potential models, TTIA and TTIA-wb, to describe experimental spectroscopic data for the At-2(+) molecular ion, and the phase shifts are calculated by the JWKB approximation. Results are presented for center-of-mass energies in the 1 meV to 10 eV range. In our calculations, the effects of the spin-orbit interaction are included through a semi-empirical model. The results obtained agree with the scarce data available in the scientific literature. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：14 / 17

页数：4

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