Enigma of H3+ dissociative recombination

Details Enigma of H3+ dissociative recombination Enigma of H3+ dissociative recombination

Jan 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993p%26ss...41....9b&link_type=abstract

Planetary and Space Science (ISSN 0032-0633), vol. 41, no. 1, p. 9-15.

Physics

32

Electron-Ion Recombination, Gas Dissociation, Molecular Ions, Recombination Reactions, Tritium, Electron States, Molecular Interactions, Reaction Kinetics, Recombination Coefficient

Scientific paper

Experimental research on the dissociative recombination of H3+ in the zeroth vibrational level is reviewed. It is concluded that the evidence that the recombination coefficient at 300 K is around 1.5 x 10 exp -7 cu cm/sec is overwhelming. However, such a high rate coefficient has appeared irreconcilable with theory, there being no crossing of potential energy curves favorable to dissociative recombination at low temperature. This has caused at least an element of doubt. A crossing of potentials is not required for the multistep dissociative recombination which has recently been introduced. It is shown that this process may explain the experimental results.

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