Gas Phase Study of C+ Reactions of Interstellar Relevance

Details Gas Phase Study of C+ Reactions of Interstellar Relevance Gas Phase Study of C+ Reactions of Interstellar Relevance

Oct 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008apj...686.1486m&link_type=abstract

The Astrophysical Journal, Volume 686, Issue 2, pp. 1486-1492.

Astronomy and Astrophysics

Astronomy

2

Astrochemistry, Ism: Clouds, Ism: Molecules, Methods: Laboratory, Molecular Processes

Scientific paper

The current uncertainty in many reaction rate constants causes difficulties in providing satisfactory models of interstellar chemistry. Here we present new measurements of the rate constants and product branching ratios for the gas phase reactions of C+ with NH3, CH4, O2, H2O, and C2H2, using the flowing afterglow-selected ion flow tube (FASIFT) technique. Results were obtained using two instruments that were separately calibrated and optimized; in addition, low ionization energies were used to ensure formation of ground-state C+, the purities of the neutral reactants were verified, and mass discrimination was minimized.

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