Dissociative recombination of rotationally cold H 3 +

B. J. McCall, A. J. Huneycutt, R. J. Saykally, N. Djuric, G. H. Dunn, J. Semaniak, O. Novotny, A. Al-Khalili, A. Ehlerding, F. Hellberg, S. Kalhori, A. Neau, R. D. Thomas, A. Paal, F. Österdahl, M. Larsson

Research output: Contribution to journalArticlepeer-review


The dissociative recombination (DR) rate measurements of a rotationally cold distribution of H 3 + was discussed using the CRYRING ion storage ring. It was found that the source design incorporated a ring-electrode dc discharge plasma and a pinhole, pulsed supersonic jet to maximize ion production while minimizing the temperature. It was observed that rotational state distributions (T rot∼30K) produced using the source were comparable to those in the diffuse interstellar medium. The branching fractions of the two breakup channels, H+H+H and H+H 2 were also measured for rotationally and vibrationally cold H 3 +.

Original languageEnglish (US)
Article number052716
Pages (from-to)052716-1-052716-12
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Issue number5 A
StatePublished - Nov 2004
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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