Exo-electron emission during the oxidation of alkalated W(110) surfaces

We have investigated the emission of electrons and photons during the oxygenation of submonolayer (coverage θ Alk ⩽ 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-precover...

Full description

Saved in:
Bibliographic Details
Published in:Surface science 1992-02, Vol.262 (1), p.151-158
Main Authors: Brenten, H., Müller, H., Maus-Friedrichs, W., Dieckhoff, S., Kempter, V.
Format: Article
Language:English
Subjects:
Applied sciences
Chemistry
Exact sciences and technology
General and physical chemistry
Metals. Metallurgy
Solid-gas interface
Surface physical chemistry
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We have investigated the emission of electrons and photons during the oxygenation of submonolayer (coverage θ Alk ⩽ 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 O 2 molecule affinity level is supported by the results of substituting O 2 by CO molecules in the experiments.
ISSN:0039-6028
1879-2758
DOI:10.1016/0039-6028(92)90467-K