Adsorption Properties of Stepped Surfaces.
Karner H, Luger M, Steinrück HP, Rendulic K, Winkler A (1985)
Publication Type: Journal article
Publication year: 1985
Journal
Original Authors: Karner H., Luger M., Steinrueck H.P., Rendulic K.D., Winkler A.
Publisher: Elsevier
Book Volume: 37
Event location: Debrecen, Hung
DOI: 10.1016/0042-207X(87)90145-X
Abstract
We have determined the sticking probability of hydrogen and deuterium on a stepped nickel surface at different adsorption angles and for different surface and gas temperatures. The initial sticking coefficient shows a highly asymmetric behavior with respect to the surface normal; hydrogen molecules at room temperature impinging in the 'step-up' direction have a considerably higher sticking probability than the 'step-down' direction. This behavior is more pronounced for lower gas temperatures (T equals 150 K) and almost vanishes for higher gas temperatures (T equals 900 K). Blocking the active step sites with oxygen reduces the asymmetric adsorption behavior yielding an angular variation similar to the adsorption on a flat Ni(111) surface. The influence of the surface temperature on the sticking coefficient is much less pronounced in the experimentally accessible region (150-300 K). In the behavior of hydrogen and deuterium there are no prominent differences.
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APA:
Karner, H., Luger, M., Steinrück, H.-P., Rendulic, K., & Winkler, A. (1985). Adsorption Properties of Stepped Surfaces. Vacuum, 37. https://dx.doi.org/10.1016/0042-207X(87)90145-X
MLA:
Karner, H., et al. "Adsorption Properties of Stepped Surfaces." Vacuum 37 (1985).
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