Collision processes of electrons with molecular hydrogen ions

Mathur, D. ; Khan, S. U. ; Hasted, J. B. (1979) Collision processes of electrons with molecular hydrogen ions Journal of Physics B: Atomic and Molecular Physics, 12 (12). pp. 2043-2050. ISSN 0022-3700

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Collision processes of electrons with trapped ions of mass numbers 1, 2, 3, 5, 7, 10, 14 and 20 are investigated in the concentric electron-beam device. Trapping characteristics are measured and lead to the conclusion that all the ions in the trap are hydrogenic. Cross section functions for the electron impact dissociation of H2+, H3+ and H5+ are measured. The shape of the H2+ dissociation indicates that the molecular ions are trapped for a sufficiently long time for vibrational decay to upsilon =0 to occur. There is good agreement between the present low energy H3+ dissociation data and previous work. Dissociation cross sections for H5+ and the temperature dependence of the e-H5+ recombination rate are measured. The latter is in good agreement with previous room temperature data and facilitates the prediction of the recombination rate in the Jovian atmosphere.

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