Production and loss of the water-related species H_3O^+, H_2O and OH in dense interstellar clouds

Details Production and loss of the water-related species H_3O^+, H_2O and OH in dense interstellar clouds Production and loss of the water-related species H_3O^+, H_2O and OH in dense interstellar clouds

Sep 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996mnras.282..413w&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 282, Issue 2, pp. 413-420.

Astronomy and Astrophysics

Astronomy

45

Atomic Processes, Molecular Processes, Ism: Abundances, Ism: Clouds, Ism: Individual: Sgr B2

Scientific paper

Following the recent determinations of the fractional abundances of H_3O^+ and H_2O in dense interstellar clouds, the production and loss processes for these species have been investigated in the laboratory. The major processes involved are dissociative electron recombination of H_3O^+ and proton transfer to and from H_2O. The complete product distribution for the H_3O^+ recombination has now been determined and leads to the product channels OH+H_2(0.36), OH+2H(0.29) and O+H+H_2(0.30) with the channel H+H_2O(0.05) being much smaller than previously assumed. It has been shown that loss of H_3O^+ by proton transfer to a series of sulphur-containing species with larger proton affinities is very efficient and also non-dissociative, further establishing the trend for proton transfer reactions involving this ion. These data have been used in a limited model to predict the fractional abundance of H_2O and the relative abundances of H_2O and H_3O^+ in Sgr B2. Predictions are also made for other dense interstellar clouds.

Affiliated with

Also associated with

No associations

Rating

Production and loss of the water-related species H_3O^+, H_2O and OH in dense interstellar clouds does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Production and loss of the water-related species H_3O^+, H_2O and OH in dense interstellar clouds, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Production and loss of the water-related species H_3O^+, H_2O and OH in dense interstellar clouds will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-994790