Differential cross sections for single ionization of Li in collisions with fast protons and O8+ ions

被引：9

作者：

Gulyas, L. ^{[1
]}

Egri, S. ^{[2
]}

Kirchner, T. ^{[3
]}

机构：

[1] Hungarian Acad Sci, Inst Nucl Res, ATOMKI, H-4001 Debrecen, Hungary

[2] Univ Debrecen, Dept Expt Phys, H-4026 Debrecen, Hungary

[3] York Univ, Dept Phys & Astron, Toronto, ON M3J 1P3, Canada

来源：

PHYSICAL REVIEW A | 2014年 / 90卷 / 06期

基金：

匈牙利科学研究基金会; 加拿大自然科学与工程研究理事会;

关键词：

POSITRON-ATOM; IMPACT; SCATTERING; HE;

D O I：

10.1103/PhysRevA.90.062710

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We study the process of single ionization of Li in collisions with H+ and O8+ projectile ions at 6-MeV and 1.5-MeV/amu impact energies, respectively. Using the frameworks of the independent-electron model and the impact parameter picture, fully (FDCS) and doubly (DDCS) differential cross sections are evaluated in the continuum distorted wave with eikonal initial-state approximation. Comparisons are made with the recent measurements of LaForge et al. [J. Phys. B 46, 031001 (2013)] for the DDCS and Hubele et al. [Phys. Rev. Lett. 110, 133201 (2013)] for the FDCS, respectively. For O8+ impact inclusion of the heavy particle [nucleus-nucleus (NN)] interaction in the calculations is crucial and effects of polarization due to the presence of the projectile ion have also to be taken into account for getting very good agreement with the measured data. Our calculation reproduces the satellite peak structure seen in the FDCS for the Li(2s) measurement, which we explain as being formed by a combination of the binary and NN interactions.

引用

页数：10

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