Abstract

We investigate - molecule scattering using both the adiabatic nuclear rotation (ANR) and the rotational laboratory-frame close-coupling (rotational LFCC) models. Results are reported for rotationally elastic , rotational excitation and the total cross sections (summed over the rotational cross sections) in the energy range 0.0408 - 9.74 eV. The present total cross sections are in good agreement with the measured values below the positronium formation threshold. The rotational excitation cross section is found to be sensitive to the short-range potential.

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