TY - JOUR
T1 - Position analysis of light adsorbates by recoil detection
T2 - H on Ru(001)
AU - Schulz, J.
AU - Taglauer, E.
AU - Feulner, P.
AU - Menzel, D.
N1 - Funding Information:
The authors gratefully acknowledge the assistance of H. Derks with the MARLOWE calculations and helpful discussions with M. Bcckschuhe. The technical assistance of F. Schuster and K. Gehringer is gratefully acknowledged. This work was carried out under the framework of Sonderforschungsbereich 338 of the Dcutsche Forschungsgcmeinschaft.
PY - 1992/2/2
Y1 - 1992/2/2
N2 - The position of light adsorbates such as hydrogen isotopes on a crystal surface can be investigated by direct recoil detection. Together with low energy ion scattering from the substrate adsorption sites can be identified. By these means the adsorption of H on Ru(001) was studied using 1.5 keV Ne+ ions. At 138 K adsorption in a threefold coordinated hollow position was found, the hydrogen being at a distance of 1.01 ± 0.07 Å above the topmost Ru layer. This distance is larger at 300 K and no lateral ordering was detected at this temperature, indicating a high mobility of hydrogen under these conditions. The experimental results are confirmed by numerical simulations using the computer code MARLOWE.
AB - The position of light adsorbates such as hydrogen isotopes on a crystal surface can be investigated by direct recoil detection. Together with low energy ion scattering from the substrate adsorption sites can be identified. By these means the adsorption of H on Ru(001) was studied using 1.5 keV Ne+ ions. At 138 K adsorption in a threefold coordinated hollow position was found, the hydrogen being at a distance of 1.01 ± 0.07 Å above the topmost Ru layer. This distance is larger at 300 K and no lateral ordering was detected at this temperature, indicating a high mobility of hydrogen under these conditions. The experimental results are confirmed by numerical simulations using the computer code MARLOWE.
UR - http://www.scopus.com/inward/record.url?scp=4243898203&partnerID=8YFLogxK
U2 - 10.1016/0168-583X(92)95539-4
DO - 10.1016/0168-583X(92)95539-4
M3 - Article
AN - SCOPUS:4243898203
SN - 0168-583X
VL - 64
SP - 588
EP - 592
JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
IS - 1-4
ER -