Observations of the presence of the ion H2CN/plus/-N2 - Implication for the Titan atmosphere

Details Observations of the presence of the ion H2CN/plus/-N2 - Implication for the Titan atmosphere Observations of the presence of the ion H2CN/plus/-N2 - Implication for the Titan atmosphere

Jun 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982crasb.294.1225s&link_type=abstract

Academie des Sciences (Paris), Comptes Rendus, Serie II - Mecanique, Physique, Chimie, Sciences de l'Univers, Sciences de la Ter

Physics

1

Atmospheric Chemistry, Chemical Evolution, Nitriles, Satellite Atmospheres, Titan, Alpha Particles, Cosmic Ray Showers, Mass Spectra, Reaction Kinetics, Voyager 1 Spacecraft

Scientific paper

IR spectroscopy measurements carried out by Voyager I of the atmosphere of the Saturn moon Titan revealed the presence of a 90 percent concentration of molecular N, 5 percent CH4, and trace gases produced by the photolysis of the CH4. In order to test the possibility of formation of prebiotic nitriles such as H2CN(plus)-N2 in the lower atmosphere of Titan due to bombardment by cosmic ray showers, laboratory tests were conducted to observe the reaction products formed by the exposure of H2CN(plus) with alpha radiation. The resulting ionic species were identified by spectrometer and mass quadrupole analyzer. Reaction constants were determined, along with the possibility of reversal, and variations of the reaction with time. A constant of 1.10 x 10 to the -15/cu cm was found for the formation of H2CN(plus)-N2 at 150 K. The reaction enthalpy was set at 7.65 kcal/mole. The results were concluded to be valid for the types of reactions which could occur in conditions existing on Titan.

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