Differential cross sections for electron/positron scattering from polyatomic molecules Original Research Article

We describe a new computational code which allows for the calculation of elastic and rotationally inelastic differential cross sections (DCS) for electron/positron scattering from neutral polyatomic molecule with and without permanent dipole moments. The computation can deal both with linear and nonlinear systems. In the case of polar targets a procedure which corrects for the nonconvergence of the DCS in the Body-Fixed (BF) frame is described and implemented. The corresponding state-to-state rotationally inelastic and rotationally summed differential cross sections for rotational transitions involving spherical, symmetric and asymmetric top rotors are also given by the present code.