Positron scattering from hydrogen atom with screened Coulomb potentials

被引：8

作者：

Ghoshal, Arijit ^{[1
,2
]}

Nayek, Sujay ^{[1
]}

Kamali, M. Z. M. ^{[3
]}

Ratnavelu, K. ^{[2
]}

机构：

[1] Univ Burdwan, Dept Math, Burdwan 713104, W Bengal, India

[2] Univ Malaya, Fac Sci, Inst Math Sci, Kuala Lumpur 50603, Malaysia

[3] Univ Malaya, Ctr Fdn Stud Sci, Kuala Lumpur 50603, Malaysia

来源：

FRONTIERS IN PHYSICS | 2014年 / 1588卷

关键词：

positron; hydrogen; screened Coulomb potential; distorted-wave theory; LOW ENERGIES; COLLISIONS; SEMICONDUCTORS; PLASMA;

D O I：

10.1063/1.4866928

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Elastic positron-hydrogen collisions with screened Coulomb potentials have been investigated using a second-order distorted wave Born approximation in the momentum space. Two types of potentials have been considered, namely, static screened Coulomb potential and exponential cosine-screened Coulomb potential. Using a simple variationally determined hydrogenic wave function it has been possible to obtain the scattering amplitude in a closed form. A detailed study has been made on the differential and total cross sections in the energy range 20 - 300 eV.

引用

页码：94 / 102

页数：9

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