Low-energy electron scattering by silane (SiH4) molecules in the adiabatic-nuclei approximation
- 28 June 1987
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic and Molecular Physics
- Vol. 20 (12) , 2861-2870
- https://doi.org/10.1088/0022-3700/20/12/030
Abstract
The elastic scattering of electrons by silane (SiH4) is investigated theoretically in the energy range 0.1 to 10 eV. The authors employ a model potential approach in which the total optical potential is a sum of three interactions, namely static, exchange and polarisation. The static potential is generated from silane near-Hartree-Fock single centre wavefunctions, while the exchange effects are included approximately through the electron-gas model. For the polarisation potential the authors use two models, a simple parametric form and the parameter-free form of Jain and Thompson (1982). Results are given for total and momentum transfer cross sections and show a Ramsauer-Townsend behaviour, with a minimum below 0.5 eV, and a maximum in the range 2-4 eV. The maximum is due to a shape resonance in the T2 scattering state and is mainly d wave. The results are compared with experiment.Keywords
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