S.E.T.U.P. "Experimental and Theoretical Simulations Useful for Planetology" related studies on molecular nitrogen dissociation by cold plasma

Details S.E.T.U.P. "Experimental and Theoretical Simulations Useful for Planetology" related studies on molecular nitrogen dissociation by cold plasma S.E.T.U.P. "Experimental and Theoretical Simulations Useful for Planetology" related studies on molecular nitrogen dissociation by cold plasma

Sep 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008epsc.conf..925g&link_type=abstract

European Planetary Science Congress 2008, Proceedings of the conference held 21-25 September, 2008 in Münster, Germany. Online a

Physics

Scientific paper

This paper presents studies performed in the frame of the SETUP program (a French acronym for Experimental and Theoretical Simulations Useful for Planetology). One of the final goals of this project is to be able to determine the physico-chemical processes involved in Titan's atmosphere [1]. With this aim, representative simulation experiments (in term of temperature, pressure and energy deposition) will be performed using a unique device. Indeed, it will allow qualitative and quantitative time resolved analysis of intermediates species as well as primary products formed into the reactor where the initial gas mixture (nitrogen N2 and methane CH4, the main constituents of the atmosphere of the satellite that will be taken in the appropriate ratio) will be exposed, for the first time, to electrons and photons. A cold plasma will be settled in order to dissociate N2 while UV photons delivered by a continuous lamp (@Lyman α =121.6 nm) or a pulsed excimer laser (@ 248 nm) will be used to dissociate CH4 (by a 1 and a 2 photons mechanism respectively). The evolution of the resulting gas mixture will be probed thanks to in situ time resolved laser spectroscopy.

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