Energy Dependence of Dissociative Recombination Below 0.08 eV Measured with (Electron-Ion) Merged-Beam Technique.

Experimental studies of the dissociative recombination of H 3 +

“…Shortly after, inclined-and mergedbeams experiments were performed (Peart & Dolder 1974a;b;Auerbach et al . 1977;McGowan et al 1979). The results were similar to the afterglow result, and it was claimed that vibrationally de-excited H + 3 ions were used in the experiments.…”

“…H + H + 2 + e ¡ , was used to determine the vibrational state distribution in H + 3 to be a mixture of v = 0 and v = 1. It was suggested that the larger DR cross-sections obtained in the earlier merged-beams experiments were due to vibrationally excited H + 3 (Auerbach et al 1977;McGowan et al 1979). This is quite possible, but it does not explain the inclined-beams result of Peart & Dolder (1974a).…”

“…Thus, a result clearly larger than the FALP result , but smaller than existing beam results (Peart & Dolder 1974b;Auerbach et al . 1977;McGowan et al 1979), stationary afterglow results (Leu et al . 1973;Macdonald et al .…”

“…The new mergedbeams experiment (Hus et al . 1988) was performed with the same apparatus used by Auerbach et al (1977) and McGowan et al (1979), but with a trap ion source instead of a radio frequency ion source. Because of the long storage time in the trap source, collisional deactivation of vibrational modes was obtained.…”