3 years ago

A Model of Titan-like Chemistry to Connect Experiments and Cassini Observations

A numerical model is presented for interpreting the chemical pathways that lead to the experimental mass spectra acquired in the Titan Haze Simulation (THS) laboratory experiments and for comparing the electron density and temperature of the THS plasma to observations made at Titan by the Cassini spacecraft. The THS plasma is a pulsed glow-discharge experiment designed to simulate the reaction of N 2 /CH 4 -dominated gas in Titan's upper atmosphere. The transient, one-dimensional model of THS chemistry tracks the evolution of more than 120 species in the direction of the plasma flow. As the minor species C 2 H 2 and C 2 H 4 are added to the N 2 /CH 4 -based mixture, the model correctly predicts the emergence of reaction products with up to five carbon atoms in relative abundances that agree well with measured mass spectra. Chemical growth in Titan's upper atmosphere transpires through ion–neutral an...

Publisher URL: http://iopscience.iop.org/0004-637X/853/2/107

DOI: 10.3847/1538-4357/aaa12c

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