Momentum transfer cross sections for the low-energy electron scattering by NH3molecules

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Abstract
The fixed-nuclei and the adiabatic-rotation approximations are used to calculate rotationally elastic, inelastic and summed momentum transfer cross sections for the electron-NH3 scattering in the range 0.01-10 eV. A recently proposed model-potential approach of Jain and Thompson (1983), in which ab initio parameter-free polarisation potential is used along with the exact static and the appropriate exchange potentials, is employed for this purpose. Results are also obtained with the phenomenological empirical polarisation potential. The results with the new polarisation potential are in better agreement with the available experimental data.