Ion-induced kinetic electron emission from HOPG with different surface orientation

被引：26

作者：

Cernusca, S ^{[1
]}

Fürsatz, M ^{[1
]}

Winter, HP ^{[1
]}

Aumayr, F ^{[1
]}

机构：

[1] Vienna Univ Technol, Inst Allgemeine Phys, A-1040 Vienna, Austria

来源：

EUROPHYSICS LETTERS | 2005年 / 70卷 / 06期

关键词：

D O I：

10.1209/epl/i2004-10521-x

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Total electron emission yields for impact of H+, H-2(+), C+, N+, O+ and Ar+ ions (impact energy 2 - 10 keV) on clean highly oriented pyrolytic graphite ( HOPG) have been measured. An enhancement in the electron yield of more than a factor of 2 is found when comparing results for differently oriented HOPG surfaces ( orientation of the graphite layers with respect to the surface). By analyzing these data we elucidate the influence of electron transport on kinetic electron emission and derive direction-dependent mean escape depths for low-energy electrons.

引用

页码：768 / 774

页数：7

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