Atom-surface interaction in inelastic scattering: He/Ag(111) |
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| Authors: | V Celli G Benedek U Harten JP Toennies RB Doak V Bortolani |
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| Institution: | Max-Planck-Institut für Strömungsforschung, Böttingerstrasse 4-8, D-3400 Göttingen, Fed. Rep. of Germany;AT&T Bell Laboratories, Murray Hill, New Jersey 07974, USA;Istituto di Fisica, Università di Modena, Via Campi 213/A, I-41100 Modena, Italy |
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| Abstract: | The amplitude of inelastic He scattering from Rayleigh waves on a Ag(111) surface is calculated in the framework of the distorted wave Born approximation (DWBA) for a two-body exponential potential. Using the potential parameters recently obtained by Bortolani et al. from a quantum mechanical calculation, agreement is obtained with the experimental data. Simple explicit formulas are presented both in the DWBA and in the eikonal approximation. The essential factor in both cases describes an approximate exponential decay of the intensity for increasing parallel momentum transfer. |
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