LOW-ENERGY ELASTIC BACKSCATTERING OF ELECTRONS FROM AR+

被引：12

作者：

GREENWOOD, JB ^{[1
]}

WILLIAMS, ID ^{[1
]}

SRIGENGAN, B ^{[1
]}

NEWELL, WR ^{[1
]}

GEDDES, J ^{[1
]}

ONEILL, RW ^{[1
]}

机构：

[1] UCL, LONDON, ENGLAND

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 1995年 / 28卷 / 09期

关键词：

D O I：

10.1088/0953-4075/28/9/003

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Measurements of absolute partial cross sections, integrated over the angular range 90 degrees-180 degrees, are reported for the elastic scattering of electrons from Ar+ at impact energies 3.5-6.5 eV. These constitute the first measurements of backward scattering and for energies below the inelastic threshold in the elastic scattering of free electrons from positive ions. Comparison with the predictions of the Rutherford formula, and partial wave analysis using semiempirical static potentials, suggests that low-energy, large-angle scattering from singly charged positive ions provides an excellent regime for the testing of dynamic effects in electron-ion collisions.

引用

页码：L307 / L311

页数：5

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