Calculation of elastic differential cross sections for electron scatteringby molecular hydrogen

sDifferential cross sections for the elastic scattering of electrons by Hz at 100 eV and 150 eV have been calculated and compared with experiments. We use the momentum space method in which the electron-molecule system has a single centre and the interaction of electron-nuclei is expanded by a multi pole expansion. The static exchange calculation is supplemented by a phenom enological polarization potential. Electron-molecule scattering is reduced to an electronic problem by the Born-Oppenheimer approximation, using closu re over the vibrational states.