Polarization effects in low-energy electron scattering from silane molecules in an exact static-exchange model

Journal Article · Mon Jul 01 04:00:00 EDT 1991 · Physical Review, A; (USA)

DOI:https://doi.org/10.1103/PhysRevA.44.772· OSTI ID:5730295

Jain, A ^[1]

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1. Department of Physics, Florida A M University, Tallahasse, Florida 32307 (US)

We have investigated the effects of various model polarization potentials in low-energy (below 15 eV) electron-SiH{sub 4} collisions in which electron-exchange correlation is treated exactly via an iterative procedure. Two models of the parameter-free polarization potential are employed; one, the {ital V}{sub pol}{sup JT} potential, introduced by Jain and Thompson (J. Phys. B 15, L631 (1982)), is based on the polarized-orbital theory; the other, the correlation-polarization potential {ital V}{sub pol}{sup CP}, first proposed by O'Connel and Lane (Phys. Rev. A 27, 1893 (1983)), is given as a density functional. In this low-energy region, the differential as well as integral cross sections are greatly influenced by such short-range-correlation and long-range-polarization interactions. We found that a local parameter-free model to mimic charge-distortion effects is quite successful if it is determined under the polarized-orbital-type approach rather than based on density-functional theory.

• OSTI ID: 5730295
• Journal Information: Physical Review, A; (USA), Journal Name: Physical Review, A; (USA) Vol. 44:1; ISSN 1050-2947; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
COLLISIONS
ELECTRON COLLISIONS
ELECTRON EXCHANGE
ELECTRON TRANSFER
ELECTRON-MOLECULE COLLISIONS
ENERGY RANGE
EV RANGE
HYDRIDES
HYDROGEN COMPOUNDS
MOLECULE COLLISIONS
ORGANIC COMPOUNDS
ORGANIC SILICON COMPOUNDS
POLARIZATION
POTENTIALS
RAMSAUER EFFECT
SILANES
SILICON COMPOUNDS