Stimulated desorption of atoms from rare-gas monolayers on metal surfaces: dependence of yields and energy distributions on primary excitations

Kinetic energy distributions of Ar and Kr atoms desorbed by electron impact from saturated and dilute monolayers on Ru(001) have been measured by a time-of-flight technique. Both the most-probable kinetic energies and the desorption yields are found to increase for electron energies above the thresh...

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Bibliographic Details
Published in:Physical review. B, Condensed matter Condensed matter, 1989-12, Vol.40 (16), p.11348-11351
Main Authors: STEINACKER, E, FEULNER, P
Format: Article
Language:English
Subjects:
656003 - Condensed Matter Physics- Interactions between Beams & Condensed Matter- (1987-)
Applied sciences
ARGON
Chemistry
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
CROSS SECTIONS
Cross-disciplinary physics: materials science
rheology
DESORPTION
ELEMENTS
ENERGY SPECTRA
Exact sciences and technology
FLUIDS
GASES
General and physical chemistry
KRYPTON
Materials science
METALS
Metals, semimetals and alloys
Metals. Metallurgy
MORSE POTENTIAL
NONMETALS
Physics
PLATINUM METALS
POTENTIALS
RARE GASES
RUTHENIUM
Solid-gas interface
SORPTIVE PROPERTIES
Specific materials
SPECTRA
Surface physical chemistry
SURFACE PROPERTIES
TIME-OF-FLIGHT METHOD
TRANSITION ELEMENTS
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Summary:Kinetic energy distributions of Ar and Kr atoms desorbed by electron impact from saturated and dilute monolayers on Ru(001) have been measured by a time-of-flight technique. Both the most-probable kinetic energies and the desorption yields are found to increase for electron energies above the thresholds for multiple ionization. This effect is particularly pronounced for Kr. Using gas-phase ionization cross sections, relative escape probabilities for single and multiple primary ionization are derived. The data can form the basis for a quantitative theory of the desorption process.
ISSN:0163-1829
1095-3795
DOI:10.1103/PhysRevB.40.11348