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Accueil > Recherche > Équipe Spectroscopie - Planétologie - Atmosphères - Clathrates - Environnement > Présentation des thématiques de recherche

Gas / solid interfaces in planetary atmospheres

par Petit Jean-Marc -

Staff : V. Ballenegger, A. Lakhlifi, L. Martin-Gondre, S. Picaud, D. Vardanega

This research theme is developed along two main axes.

The first axis is devoted to the carbon-based interfaces (organic carbon and black carbon). The aim is to model, on the basis of numerical simulations at the molecular level, the physicochemical characteristics of carbonaceous aerosols (reactivity, aging, hygroscopy, optical properties) in order to contribute to improving the knowledge of their quantitative impact on climate change and on our environment. These simulations are based on close collaborations with experimentalists.
In addtion, strong connections exist between the modeling of soot and the study of carbonaceous particles in interstellar dust. This opens the way for joint work with the PhAs team. The surface reactivity of these carbonaceous objects in the interstellar medium is also approached insofar as it could give rise to the formation of amino acids, the first elementary bricks of the life.

The second axis is devoted to the modeling of gas / ice interfaces and focuses on the selectivity of the trapping processes by ice particles in the troposhere and by clathrate structures, using molecular dynamics (at both classical and quantum levels) and Monte Carlo simulations. The modeling of clathrates takes place in particular within the framework of the ANR project MI2C, devoted to the study of the influence of mineral impurities on the trapping of volatiles in Clathrates.