A very careful LEED analysis of the Ni(110) surface is given with two purposes in mind: (a) firstly, the authors clarify a controversy concerning the actual normal relaxation of the top layer: (b) secondly, they compare the merits and drawbacks of the three procedures used in their analysis (the R-factors of Zanazzi and Jona (1977) and of Pendry (1974) on the one hand, and the I(g) method on the other). In the present paper the authors describe the experimental aspects concerning two large and diversified data bases which they have collected with their home-made LEED goniometer, for the R-factor and the I(g) analysis respectively. The authors also show how qualitative information on the relaxation and/or on the presence of steps can be gained from the isointensity maps recorded for the specular beam.
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Gauthier et al. (1982) studied this question.
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