Biology
Scientific paper
Sep 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aipc..855...17b&link_type=abstract
ASTROCHEMISTRY: From Laboratory Studies to Astronomical Observations. AIP Conference Proceedings, Volume 855, pp. 17-30 (2006).
Biology
4
Chemical Reactions, Energy Disposal, And Angular Distribution, As Studied By Atomic And Molecular Beams, Astrobiology And Astrochemistry Of The Solar System And Interplanetary Space, Chemical Composition And Chemical Evolution, Atomic, Molecular, And Chemical, And Grain Processes
Scientific paper
In this contribution we report experimental results obtained by the crossed molecular beam technique with mass spectrometric detection on several neutral-neutral gas-phase reactions of relevance in astrochemistry. More specifically, we provide experimental evidence that the reactions of electronically excited state nitrogen atoms, N(2D), with several hydrocarbons observed in the atmosphere of Titan can generate molecular products containing a novel CN bond, thus suggesting possible routes towards the production of gas-phase nitriles in that environment. We also report on the reaction between C(3P) and acetylene, an important neutral-neutral reaction in the chemistry of interstellar clouds. The branching ratio between the cyclic and linear C3H isomers has been derived for a collision energy of 3.5 kJ mol-1. Further evidence of the occurrence of the C3 formation channel is given. Finally we report on recent studies of reactions involving two open shell species, namely O+CH3 and O+C3H5. Products other than those already considered in the modeling of planetary atmospheres and interstellar medium have been identified.
Balucani Nadia
Casavecchia Piergiorgio
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