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Optical emissions from the dissociative recombination of N2H+, HCO+, HOC+, and HNC+

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, , Citation R Johnsen et al 2009 J. Phys.: Conf. Ser. 192 012009 DOI 10.1088/1742-6596/192/1/012009

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1 Department of Physics and Astronomy University of Pittsburgh, Pittsburgh, PA 15260, USA

2 Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, USA

3 Smithsonian Astrophysical Observatory, 60 Garden St. MS-50 Cambridge, MA, 02138, USA

4 Army Research Laboratory, 4600 Deer Creek Loop, Aberdeen Proving Ground, MD, USA

5 Prometheus Energy Company, 3311 S. 120th Place Suite 100, Seattle, WA 98168, USA

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1742-6596/192/1/012009

Abstract

We present recent flowing-afterglow measurements of branching fractions for electronically and vibrationally excited products arising from the dissociative recombination of N2H+, HCO+, HOC+, and HNC+ ions with thermal electrons. State-specific yields were derived by fitting the observed, spatially resolved emission band intensities to models that simulate all ion-chemical processes, recombination, diffusion, and gas mixing.

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10.1088/1742-6596/192/1/012009