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 language||English (US)|
|Journal||Physical Review A - Atomic, Molecular, and Optical Physics|
|Issue number||5 A|
|State||Published - Nov 2004|
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics