ELASTIC-SCATTERING OF LOW-ENERGY ELECTRONS WITH SR ATOMS

被引：11

作者：

YUAN, JM ^{[1
]}

ZHANG, ZJ ^{[1
]}

WAN, H ^{[1
]}

机构：

[1] CHINA CTR ADV SCI & TECHNOL, WORLD LAB, POB 8730, BEIJING, PEOPLES R CHINA

来源：

PHYSICAL REVIEW A | 1990年 / 41卷 / 09期

关键词：

D O I：

10.1103/PhysRevA.41.4732

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Static-exchange, plus correlation-polarization-potential calculations are performed for elastic low-energy electron scattering from Sr atoms while paying attention to the low-lying shape resonances. The correlation potential is calculated both with and without a scaling factor. A 2D-shape resonance is produced at 1.0 eV with a parameter-free, and at 1.25 eV with a scaled, correlation potential. No 2P-shape resonances are predicted, but evidence to support the existence of a stable negative ion Sr- in the 5s25p electron configuration is given from the viewpoint of electron scattering. The bound energy of the extra electron in the negative ion is estimated by transforming the phase shift of the corresponding partial wave into the polarization quantum-defect number and extrapolating the number from positive to negative energies. © 1990 The American Physical Society.

引用

页码：4732 / 4739

页数：8

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