Experimental simulation of Titan's aerosols formation

Thomas Gautier 1, 2
1 IMPEC - LATMOS
LATMOS - Laboratoire Atmosphères, Milieux, Observations Spatiales
Abstract : This thesis studies the formation mechanisms and the composition of Titan's aerosols analogs, so called tholins. The study of the gas phase allowed identifying several aerosols precursors, especially nitrogen-bearing species such as imines and nitriles. These species may be a first step on the gas to solid transition. The study of the infrared absorbance properties of tholins allowed providing for the first time the wavelength dependence of their linear absorption coefficient from far- to mid-infrared. The investigation on tholins chemical composition allowed to infer their polymeric structure and to detect a large amount of nitrogen in this structure. The last part of the thesis is dedicated to a comparison of the tholins chemistry induced by different energy sources. On a general way, this thesis proposes, when possible, the comparison between data obtained in the lab and actual observations of Titan's atmosphere.
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https://tel.archives-ouvertes.fr/tel-00878846
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Submitted on : Thursday, October 31, 2013 - 9:53:58 AM
Last modification on : Friday, January 10, 2020 - 3:42:29 PM
Long-term archiving on: Saturday, February 1, 2014 - 4:25:41 AM

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  • HAL Id : tel-00878846, version 1

Citation

Thomas Gautier. Experimental simulation of Titan's aerosols formation. Planétologie et astrophysique de la terre [astro-ph.EP]. Université de Versailles-Saint Quentin en Yvelines; Ruhr-Universität Bochum, 2013. Français. ⟨tel-00878846⟩

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