Rotational excitation of symmetric-top molecular ions by electron impact

Details Rotational excitation of symmetric-top molecular ions by electron impact Rotational excitation of symmetric-top molecular ions by electron impact

Aug 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975phrva..12..396c&link_type=abstract

Physical Review A - General Physics, 3rd Series, vol. 12, Aug. 1975, p. 396-405.

Physics

General Physics

13

Electron Impact, Hydronium Ions, Molecular Excitation, Molecular Ions, Molecular Rotation, Born Approximation, Dipoles, Electron Scattering, Electron Transitions, Particle Collisions, Quadrupoles

Scientific paper

The theory for the rotational excitation of symmetric-top molecular ions by electron impact is formulated within the Coulomb-Born approximation. Analytical expressions are derived for the rotational transitions induced by dipole and by quadrupole interactions. The cross sections are large and finite at threshold and decrease with increasing electron-impact energy. The validity of the present theory for the description of low-energy collisions is examined. Numerical calculations are reported for the excitation of the hydronium H3O(+) ion.

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