Abstract
The spherical approximate wavefunctions and electronic densities of CH4 and SiH4 are obtained using a spherical approximate molecular Hamiltonian, employing the numerical Xalpha method with the self-interaction correction. The spherical parameter-free model potentials for the interaction between the incident electron and the target molecules are generated from the electronic densities, and include the static potential, the Hara (1967) free-electron-gas exchange (HFEGE) potential and O'Connell and Lane's (1983) correlation-polarisation potential. Total, momentum transfer and differential cross sections are calculated via partial-wave analysis.
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