Calculation of electron-impact rotationally elastic total cross sections for NH3, H2S, and PH3 over the energy range from 0.01 eV to 2 keV

This paper report results of calculation of the total cross section Q T for electron impact on NH3, H2S, and PH 3 over a wide range of incident energies from 0.01 eV to 2 keV. Total cross sections QT (elastic plus electronic excitation) for incident energies below the ionization threshold of the target were calculated using the UK molecular R-matrix code through the Quantemol-N software package and cross sections at higher energies were derived using the spherical complex optical potential formalism. The two methods are found to give self-consistent values where they overlap. The present results are, in general, found to be in good agreement with previous experimental and theoretical results.