An N2 : CH4 : H2O DC glow discharge plasma probed by optical and electric techniques : significance to the radiation chemistry of Titans upper atmosphere in the presence of meteoritic water

Details An N2 : CH4 : H2O DC glow discharge plasma probed by optical and electric techniques : significance to the radiation chemistry of Titans upper atmosphere in the presence of meteoritic water An N2 : CH4 : H2O DC glow discharge plasma probed by optical and electric techniques : significance to the radiation chemistry of Titans upper atmosphere in the presence of meteoritic water

Aug 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998p%26ss...46..967n&link_type=abstract

Planetary and Space Science, Volume 46, Issue 8, p. 967-974.

Computer Science

Scientific paper

This paper presents optical and electrical measurements on plasma generated by DC excited glow discharges in mixtures composed of 95% N2, 4.8% CH4 and 0.2% H2O at pressures varying from 1.064 mbar to 4.0 mbar. The discharges simulate the chemical reactions that may occur in Titans atmosphere in the presence of meteorites and ice debris coming from Saturns systems, assisted by cosmic rays and high energy charged particles. The results obtained from actinometric optical emission spectroscopy, combined with the results from a pulsed Langmuir probe, show that chemical species CH, CN, NH and OH are important precursors in the synthesis of the final solid products and that the chemical kinetics is essentially driven by electronic collision processes. It is shown that the presence of water is sufficient to produce complex solid products whose components are important in prebiotic compound synthesis.

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