ANGLE-RESOLVED EMISSION OF LOW-ENERGY ELECTRONS IN GRAZING COLLISIONS OF PROTONS WITH AN AL(111)-SURFACE

被引：16
|
作者：
HEGMANN, A
ZIMNY, R
ORTJOHANN, HW
WINTER, H
MISKOVIC, ZL
机构：
[1] HUMBOLDT UNIV BERLIN, FACHBEREICH PHYS, D-10115 BERLIN, GERMANY
[2] UNIV WATERLOO, DEPT APPL MATH, WATERLOO N2L 4G1, ON, CANADA
来源：
EUROPHYSICS LETTERS | 1994年 / 26卷 / 05期
关键词：
D O I：
10.1209/0295-5075/26/5/011
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Angle-resolved energy spectra of electrons emitted during the collision of 10 to 29 keV protons with a clean and flat Al(111)-surface under grazing incidence are reported. We observe in the electron energy regime of our studies (0 to 60 eV) two broad peak structures. A low-energy peak, tentatively ascribed to secondary-electron-emission processes, and an emission at higher energies peaked in forward scattering direction. We interpret the latter finding in terms of a direct-kinetic-electron-emission mechanism; i.e. direct ejection of conduction electrons into vacuum via collisions with the projectiles.
引用
收藏
页码：383 / 388
页数：6
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