Combined experimental and theoretical studies on methane photolysis at 121.6 and 248nm—implications on a program of laboratory simulations of Titan’s atmosphere

Autor: Et. Es-sebbar, Yves Bénilan, S. Perrier, E. Arzoumanian, Claire Romanzin, Antoine Jolly, M. C. Gazeau

Publikováno v: Planetary and Space Science. 58:1748-1757

Methane is, together with N2, the main precursor of Titan's atmospheric chemistry. In our laboratory, we are currently developing a program of laboratory simulations of Titan's atmosphere, where methane is intended to be dissociated by multiphotonic

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::350b1aea4f40a0817c4cb0ccab20270f
https://doi.org/10.1016/j.pss.2010.07.001

Structure of the intermediate formed in the synthesis of symmetrical pyrylium ions

Autor: M.-C. Gazeau, Jean-Louis Peglion, J. Vian, Jean Kossanyi, G. Salvetat, J. Jaraudias, M. Simalty, Pierre Valat, V. Wintgens, D. Doizi, B. Perly

Publikováno v: Journal of Physical Organic Chemistry. 8:731-741

The synthesis of symmetrical blocked pyrylium derivatives by reaction of a cyclic aromatic ketone with ethyl orthoformate goes through an intermediate which can be isolated under certain conditions. This intermediate is unstable when starting from 1-

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::12c96f9377a6ea42d0eb0efe12f537f9
https://doi.org/10.1002/poc.610081106

Absolute ground-state nitrogen atom density in a N2/CH4 late afterglow: TALIF experiments and modelling studies

Autor: Et. Es-sebbar, Yves Bénilan, M C-Gazeau, Antoine Jolly, Carlos D Pintassilgo

Publikováno v: Journal of Physics D: Applied Physics
Journal of Physics D: Applied Physics, IOP Publishing, 2010, 43 (33), pp.335203. ⟨10.1088/0022-3727/43/33/335203⟩

Following a first study on a late afterglow in flowing pure nitrogen post discharge, we report new two-photon absorption laser-induced fluorescence (TALIF) measurements of the absolute ground-state atomic nitrogen density N(4S) and investigate the in

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::04d4d1b5e826bccbd5c62b36f1ef1b26
https://hal.archives-ouvertes.fr/hal-00569677/document

Experimental Study of the Degradation of Complex Organic Molecules. Application to the Origin of Extended Sources in Cometary Atmospheres

Autor: François Raulin, Yves Bénilan, Nicolas Fray, Hervé Cottin, M. C. Gazeau

Publikováno v: Cellular Origin and Life in Extreme Habitats and Astrobiology ISBN: 9781402030932

Most of the molecules observed in the cometary environment are directly produced by sublimation from the nucleus, and the main fraction of the observed radicals is the result of the photodissociation of gaseous “parent” molecules already observed

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5ce869bae8e57eabd131948a0a99edcc
https://doi.org/10.1007/978-94-007-1003-0_39

Experimental and Theoretical Photochemical Studies of Polyynes: Application to Titans Atmosphere

Autor: V. Vuitton, M. C. Gazeau, F. Raulin, Y. Benilan

Publikováno v: First Steps in the Origin of Life in the Universe ISBN: 9789401038836

Titan, the largest moon of Saturn, has a dense atmosphere mainly composed of molecular nitrogen and methane. The dissociation of these two compounds by different energy sources, in particular solar UV photons, initiates complex chemical reactions tha

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::36c896314153d794d7e56c5f972f4733
https://doi.org/10.1007/978-94-010-1017-7_55