SPIN ASYMMETRIES FOR TRIPLE-DIFFERENTIAL ELECTRON-IMPACT IONIZATION OF LITHIUM AT 54.4 EV

被引：42

作者：

BAUM, G

BLASK, W

FREIENSTEIN, P

FROST, L

HESSE, S

RAITH, W

RAPPOLT, P

STREUN, M

机构：

[1] Universität Bielefeld, Fakultät für Physik

来源：

PHYSICAL REVIEW LETTERS | 1992年 / 69卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.69.3037

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Up to now, all triple-differential cross-section measurements were performed with unpolarized electrons and atoms and, consequently, averaged over direct and exchange scattering. In our crossed-beam experiment, spin-polarized lithium atoms were ionized by spin-polarized electrons of 54.4 eV energy. In coplanar, asymmetric coincidence detection of scattered and ejected electrons, combined with electron-energy analysis, we measured a spin asymmetry which gives new information about the ionization process. Results are compared with recent calculations based on the distorted-wave Born approximation.

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页码：3037 / 3040

页数：4

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