Abstract
Theoretical studies of low-energy electron-silane scattering are reported in which target polarization is included by using an ab initio optical potential. These calculations employ the complex Kohn scattering method and were undertaken both at the static-exchange level and with target polarization. A polarized virtual-orbital method, which was introduced in our earlier study of electron-methane scattering, was also employed in this study to generate a compact description of the closed channels included in the optical potential. Differential, integral, and momentum-transfer cross sections are reported at incident energies ranging from 0.2 to 20 eV. The computed total cross section shows a Ramsauer-Townsend minimum at 0.3 eV and a broad d-wave shape resonance at 3.0 eV. Excellent agreement is found between our polarized Kohn results and the recent experimental results of Wan, Moore, and Tossell [J. Chem. Phys. 91, 7340 (1989)].
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