New FALP-MS measurements of , and dissociative recombination

Abstract

A series of measurements of the rate coefficient for the dissociative recombination (DR) of H + 3 has been recorded. A value of 7.8 ± 2.3 × 10 −8 cm 3 s −1 was found for ions that are vibrationally cold. This is somewhat smaller than that measured previously by this group. The difference is ascribed to aerodynamic effects which affected our earlier measurement that have been eliminated in the present work. Results for D + 3 and HCO + DR are also reported.

Renner-Teller effects inHCO+dissociative recombination

“…(4) [21]. The results from a number of other experiments with HCO + [22,23,24,25,26,27,28,29,30] are also shown.…”

“…This ion was first detected in space and then synthesized in the laboratory [20]. Experimental measurements of DR in HCO + were realized in a number of merged-beam, afterglow-plasma, and storage ring experiments [21,22,23,24,25,26,27,28,29,30]. In Ref.…”

Binary and ternary recombination of ${\rm D}_3^+$D3+ ions at 80–130 K: Application of laser absorption spectroscopy

“…For details on recombination studies of the D + 3 ion, see Refs. [9][10][11][12][13][14][15][16][17][18][19]. For both H + 3 and D + 3 significant differences between recombination rate coefficients were obtained in different types of experiments 10, 12-15, 19, 20 over many years and the differences between the experimental values and the theoretical ones were very large.…”

“…To our knowledge, there was no spectroscopic study of D + 3 recombination up to now. Only few studies were made using afterglow experiments 9,10,12,14,15 and storage ring experiments. 13,19 There are few storage ring experiments 22 and no afterglow experiments with H 2 D + and HD + 2 .…”

Recombination of KrD+ and XeD+ ions with electrons

“…The simple statement that the rate coefficient for D 3 + is three times smaller than the rate coefficient for H 3 + dissociative recombination is oversimplification [14][15][16]. Two former FALP (Flowing Afterglow with Langmuir Probe) studies of KrH + and XeH + recombination give just the upper limits for the values of recombination rate coefficients [6,13].…”