Theoretical study of electron scattering from CH2F2 molecules

Vibrationally elastic cross sections for electron scattering from difluoromethane (CH2F2) are calculated at the collision energies 3-30 eV. No elaborate study for the system has been published to date. Present calculation is based on the fixed-nuclei approximation. As for an interaction potential, effects of an ab initio electrostatic, electron-exchange and target polarization are taken into account. The latter two effects are considered by means of a model potential approximately. The closure formula is employed to obtain a converged cross section. The agreement between the present differential cross section and the experimental one is generally good. The integral and momentum transfer cross sections are estimated theoretically for the first time.