DIFFERENTIAL CROSS-SECTIONS FOR ELASTIC AND INELASTIC POSITRON SCATTERING FROM ALKALI ATOMS

被引：7

作者：

BARTSCHAT, K ^{[1
]}

DEVRIES, KM ^{[1
]}

MCEACHRAN, RP ^{[1
]}

STAUFFER, AD ^{[1
]}

机构：

[1] YORK UNIV,DEPT PHYS & ASTRON,TORONTO M3J 1P3,ON,CANADA

来源：

HYPERFINE INTERACTIONS | 1994年 / 89卷 / 1-4期

关键词：

D O I：

10.1007/BF02064496

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

We have investigated positron scattering from the alkali atoms lithium, sodium, potassium and rubidium, focusing on the calculation of differential cross sections for elastic scattering and impact excitation. The results obtained with the two-state and five-state close-coupling method as well as the first-order distorted wave Born approximation are compared with each other and with some selected results for electron scattering. Numerical problems due to lack of, or numerically inaccurate, calculation of partial waves with large angular momenta are solved through semi-empirical fitting/extrapolation procedures.

引用

页码：57 / 69

页数：13

共 23 条

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