STRUCTURAL INVESTIGATION OF AN ADSORBATE-COVERED SURFACE WITH HE DIFFRACTION - NI(110)+(1X2)H

This paper reports He diffraction from clean and hydrogen-saturated Ni(110) at 100 K. The clean surface can be described by a sinusoidal corrugation of amplitude 0.05 in the [001] azimuth. The hydrogen-saturated surface requires an additional corrugation of amplitude 0.23 on each second maximum of the basic corrugation. Possible adsorption structures consistent with this corrugation function are discussed. © 1979 The American Physical Society.