K. Umezawa et al., LOW-ENERGY RECOIL SCATTERING FROM HYDROGEN ADSORBED ON NI (111), Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 138, 1998, pp. 1121-1124
The technique of low-energy recoil scattering (LERS) is applied to det
ect hydrogen an a Ni (1 1 1) surface at 220 K. Recoiling spectra induc
ed by pulsed 1 keV-Ne+ primary-ion beams were monitored as a function
of polar and azimuth angles. It was found that the H atoms occupy both
the fcc- and hcp-adsorption sites on the Ni (1 1 1) terraces at a hei
ght of apporximately 1.1-1.5 Angstrom above the plane of the first lay
er of Ni atoms. (C) 1998 Elsevier Science B.V.