Theory of electron scattering from multipolar vibrations of adsorbates

Journal Article · Mon Sep 01 04:00:00 EDT 1986 · J. Chem. Phys.; (United States)

DOI:https://doi.org/10.1063/1.451013· OSTI ID:5413433

Lenac, Z; S-hacekunjic-acute-accent, M

The electronic vibrational scattering from a molecule adsorbed on a flat surface is analyzed. In the energy region where the long-range Coulomb interaction is the main scattering mechanism the molecule is described as a point multipole. The cross sections are derived for both the screened and the unscreened multipoles, which enables us to obtain the ''surface multipole selection rule'' in a rather general form. We compare the multipole with the dipole scattering, and we discuss in detail the scattering from the quadrupole, which can give effects at least comparable with the impact scattering. The molecular vibrations perpendicular and parallel to the surface are analyzed in detail and the resulting angular and energy dependent cross sections are given for parameters corresponding to the electron scattering from H adsorbed on W(100). The comparison shows that the multipole scattering can play an important role in that case.

• Research Organization: Pedagogical Faculty, YU-51000 Rijeka, Croatia, Yugoslavia
• OSTI ID: 5413433
• Journal Information: J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 85:5; ISSN JCPSA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ADSORPTION
COLLISIONS
CROSS SECTIONS
DIFFERENTIAL CROSS SECTIONS
ELECTRON COLLISIONS
ELECTRON SPECTROSCOPY
ELECTRON-MOLECULE COLLISIONS
ELEMENTS
ENERGY LEVELS
EXCITED STATES
HYDROGEN
METALS
MOLECULE COLLISIONS
NONMETALS
SORPTION
SORPTIVE PROPERTIES
SPECTROSCOPY
SURFACE PROPERTIES
TRANSITION ELEMENTS
TUNGSTEN
VIBRATIONAL STATES