Laboratory studies on elementary reactions of C atoms and CN and OH radicals with molecules of importance in the inter-stellar-medium

Details Laboratory studies on elementary reactions of C atoms and CN and OH radicals with molecules of importance in the inter-stellar-medium Laboratory studies on elementary reactions of C atoms and CN and OH radicals with molecules of importance in the inter-stellar-medium

Aug 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001esasp.496..309c&link_type=abstract

In: Exo-/astro-biology. Proceedings of the First European Workshop, 21 - 23 May 2001, ESRIN, Frascati, Italy. Eds.: P. Ehrenfreu

Biology

Laboratory Experiments, Interstellar Molecules

Scientific paper

Several reactions of relevance in astrochemistry have been studied under single collision conditions by using the crossed molecular beam (CMB) scattering method with mass spectrometric detection. The aim is to unambiguously identify the reaction products and characterize their formation dynamics. Specifically, we have investigated the reactions of carbon atoms with C2H2 (acetylene), C2H4 (ethylene), and CH3CCH (methylacetylene) (which are amongst the most widely diffuse hydrocarbons in the universe) and the reaction CN+C2H2 (relevant to the formation of cyanopolyynes in the interstellar medium). The reactions OH+H2 and OH+CO, of importance as elementary steps inside the reactive route leading to the formation of CO2 and H2O molecules in space, have also been investigated. The implications of our laboratory studies in the modeling of the chemistry of the interstellar medium and of planetary atmospheres are discussed.

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