GAS TRAPPING IN ICE

Experimental study of gas strapping in amorphous water ice and clathrate hydrate at temperature relevant for comets

Coordinatore	CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE    more  Organization address address: Rue Michel -Ange 3 city: PARIS postcode: 75794 contact info Titolo: Mr. Nome: Guillaume Cognome: Rochet Email: send email Telefono: +33 4 76881005 Fax: +33 4 76881174
Nazionalità Coordinatore	France [FR]
Totale costo	280˙254 €
EC contributo	280˙254 €
Programma	FP7-PEOPLE Specific programme "People" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013)
Code Call	FP7-PEOPLE-2012-IOF
Funding Scheme	MC-IOF
Anno di inizio	0
Periodo (anno-mese-giorno)	0000-00-00   -   0000-00-00

 Partecipanti

#	participant	country	role	EC contrib. [€]
1	CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE  Organization address address: Rue Michel -Ange 3 city: PARIS postcode: 75794 contact info Titolo: Mr. Nome: Guillaume Cognome: Rochet Email: send email Telefono: +33 4 76881005 Fax: +33 4 76881174	FR (PARIS)	coordinator	280˙254.30

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 Obiettivo del progetto (Objective)

'Comets are considered as the most primitive objects in the solar system. Their study is essential to understand the conditions of formation of the Solar System and determine its initial composition. Many unknowns remain about the nature of cometary ices and physico-chemical processes affecting ices and gas molecules within comets.

The proposed research project for the fellowship focuses on the volatile phase (ices and gas) of comets and is aimed to experimentally reproduce the physico-chemical processes occurring during the formation of cometary ices and during their evolution in comets. This project proposes to determine the fractionation of the volatile molecules of cometary interest for two structures of water ice (amorphous and clathrate) potentially present in comets.

The scientific objective of this project is to provide quantitative data on the fractionation of gas molecules depending on the structure of water ice in order to help at the determination of the chemical composition and conditions of formation of cometary ices. This project fits within the European space mission Rosetta, the first space mission of complete exploration (coma, surface, interior) of a comet beginning in 2014 and which aims to determine the nature of these objects. The data obtained through this project will be incorporated into existing cometary models that will interpret the outgassing profile of volatile species allowing to determine the original chemical composition of the comet target.

To carry out this research project, I propose to join the university of Chicago (USA) and the Institut de Planétologie et d'Astrophysique de Grenoble (IPAG) in France, which includes several Co-Investigators of the VIRTIS and CONSERT instruments aboard the Rosetta space mission. The experimental skills that the applicant will acquire during this fellowship will allow him to play an essential role in the interpretation of cometary data of the European space mission Rosetta.'