The Interaction of Hyperthermal Argon Atoms with CO-covered Ru(0001): Scattering and Collision-Induced Desorption

Michael Gleeson, H. Ueta, A.W. Kleyn

Research output: Other contributionOther research output

5 Citations (Scopus)

Abstract

Hyperthermal Ar is scattered at θi=60° from CO-saturated Ru(0001). Collision-induced desorption leads to ejection of fast CO (~1eV). Maximum desorption occurs along the surface normal, but the angular distribution varies with the fractional CO coverage, indicating that the process involves lateral interaction with adjacent molecules. There is no indication of direct recoil events. Incident Ar cannot readily penetrate the saturated overlayer. Scattered Ar has both a fast and a slow component. The slow component is dominant when scattering from the saturated layer. The fast component is due to scattering from CO when the overlayer is intact and from Ru when the layer is partially depleted.
Original languageEnglish
Place of PublicationVeldhoven, Netherlands
Publication statusPublished - 2011

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desorption
argon
collisions
scattering
atoms
interactions
ejection
indication
angular distribution
molecules

Keywords

  • METIS-304946

Cite this

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The Interaction of Hyperthermal Argon Atoms with CO-covered Ru(0001): Scattering and Collision-Induced Desorption. / Gleeson, Michael; Ueta, H.; Kleyn, A.W.

Veldhoven, Netherlands. 2011, .

Research output: Other contributionOther research output

TY - GEN

T1 - The Interaction of Hyperthermal Argon Atoms with CO-covered Ru(0001): Scattering and Collision-Induced Desorption

AU - Gleeson, Michael

AU - Ueta, H.

AU - Kleyn, A.W.

PY - 2011

Y1 - 2011

N2 - Hyperthermal Ar is scattered at θi=60° from CO-saturated Ru(0001). Collision-induced desorption leads to ejection of fast CO (~1eV). Maximum desorption occurs along the surface normal, but the angular distribution varies with the fractional CO coverage, indicating that the process involves lateral interaction with adjacent molecules. There is no indication of direct recoil events. Incident Ar cannot readily penetrate the saturated overlayer. Scattered Ar has both a fast and a slow component. The slow component is dominant when scattering from the saturated layer. The fast component is due to scattering from CO when the overlayer is intact and from Ru when the layer is partially depleted.

AB - Hyperthermal Ar is scattered at θi=60° from CO-saturated Ru(0001). Collision-induced desorption leads to ejection of fast CO (~1eV). Maximum desorption occurs along the surface normal, but the angular distribution varies with the fractional CO coverage, indicating that the process involves lateral interaction with adjacent molecules. There is no indication of direct recoil events. Incident Ar cannot readily penetrate the saturated overlayer. Scattered Ar has both a fast and a slow component. The slow component is dominant when scattering from the saturated layer. The fast component is due to scattering from CO when the overlayer is intact and from Ru when the layer is partially depleted.

KW - METIS-304946

M3 - Other contribution

CY - Veldhoven, Netherlands

ER -