EXO-ELECTRON EMISSION DURING THE OXIDATION OF ALKYLATED W(110) SURFACES

被引：28

作者：

BRENTEN, H

MULLER, H

MAUSFRIEDRICHS, W

DIECKHOFF, S

KEMPTER, V

机构：

[1] Physikalisches Institut der Technischen Universität Clausthal, D-3392 Clausthal-Zellerfeld

来源：

SURFACE SCIENCE | 1992年 / 262卷 / 1-2期

关键词：

D O I：

10.1016/0039-6028(92)90467-K

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We have investigated the emission of electrons and photons during the oxygenation of submonolayer (coverage theta(Alk) less-than-or-equal-to 1 monolayer (ML)) alkalated W(110) surfaces originating from a non-adiabatic surface reaction. Exo-electron energy distributions have been measured as a function of the alkali-precoverage. The electronic structure is monitored by MIES (metastable impact electron spectroscopy) and UPS as well as WF (work function) measurements. The surface WF turns out to be a crucial parameter in the investigation. An interpretation involving Auger de-excitation into the O2 molecule affinity level is supported by the results of substituting O2 by CO molecules in the experiments.

引用

页码：151 / 158

页数：8

共 20 条

[1] EARLY STAGES IN THE OXIDATION OF MAGNESIUM, ALUMINUM AND MAGNESIUM-ALUMINUM ALLOYS .1. EXOELECTRON EMISSION AND LONG WAVELENGTH PHOTOEMISSION [J].