Experimental and theoretical investigation of the multiple phonon excitation of 
monolayer film modes with helium atom scattering: Kr/Pt(111)

Li, M. B.; Manson, J. R.; Graham, A. P.

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Experimental and theoretical investigation of the multiple phonon excitation of monolayer film modes with helium atom scattering: Kr/Pt(111)

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Graham, A. P.
Emeritus Group Molecular Interactions, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society;

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Li, M. B., Manson, J. R., & Graham, A. P. (2002). Experimental and theoretical investigation of the multiple phonon excitation of monolayer film modes with helium atom scattering: Kr/Pt(111). Physical Review B, 65(19): 195404, pp. 195404-1-195404-7.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0029-1787-9

Abstract

Energy resolved helium atom scattering results for the multiple excitation of the perpendicular vibrations (S modes) of a krypton monolayer adsorbed on Pt(111) are presented for a wide range of incident angles. These measurements, which were obtained for incident helium atom energies much greater than the fundamental S-mode energy, are modeled within a general multiphonon scattering theory using a simple scattering form factor for a repulsive potential. The good agreement between experiment and theory indicates that the details of the He- surface interaction potential are relatively unimportant for incident energies much higher than the vibrational energy.