A simple method for evaluating low-energy electron-molecule scattering cross sections using discrete basis functions

Abstract
A simple, approximate method for calculating low-energy electron-molecule scattering cross sections using only the results of a basis set diagonalization of the molecular Hamiltonian is presented. The method is based on the approximate conservation of orbital angular momentum in collisions between slow electrons and molecules lacking a permanent dipole moment (low l spoiling). Results are presented for e--H2 and e--N2 in the static-exchange approximation.