Algebraic-eikonal approach to the electron-molecule-collision process: Vibrational excitation and quadrupole interaction

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Abstract
The vibrational excitation mechanism has been included in the algebraic-eikonal approach to the electron–polar-molecule collision process. A dipole operator that can induce vibrational transitions has been used, and a technique for the evaluation of the matrix elements required for the calculation of the scattering amplitude in the Glauber approximation has been developed. In addition to the long-range dipole interaction, the quadrupole interaction has been included in the same framework in order to improve the potential description of the collision process. Numerical calculations are shown for electron-induced rotational-vibrational excitation through the dipole and dipole-plus-quadrupole interactions.