Incoherent low-energy atom scattering from adsorbates at low coverages

✍ Scribed by S.D. Bosanac; M. Šunjić

• Publisher: Elsevier Science
• Year: 1985
• Tongue: English
• Weight: 339 KB
• Volume: 115
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(85)80105-6

✦ Synopsis

We present a theory for the scattering of low-energy atoms from molecules adsorbed at low coverage on a metal surface. The theory Is used to obtam the He-CO potential from the measured cross sections when CO is adsorbed on the pIatinum(ll1)

surface. While the spherical potential can reproduce the energy dependence of the total cross section for a fried incidence angle, the analysis of the total cross section as a function of incidence angle indicates a strong anisotropy of the long-range van der WaaIs attraction, ansing from the onentatron of the dynarnicaI dipole of the adsorbed molecule_