Objective
Titan, the largest moon of Saturn, is a fascinating object, with its dense atmosphere, mostly constituted of nitrogen and methane. Solar radiation and energetic particles from Saturn’s magnetosphere induce a complex chemistry in this atmosphere, leading to the formation of hydrocarbons and nitriles. Very recently, the Cassini-Huygens space mission has revealed the presence in the ionosphere of negatively charged ions of the type CxHyNz-, with a mass-to-charge ratio up to 10,000. This is an exceptional discovery, as negative ions had not been predicted. Negative ion production and chemistry is poorly known. In order to understand the ionospheric processes leading to the ions, complex kinetic models of Titan’s ionospheric chemistry have to be developed. The models require ion molecule reaction rates and product branching ratios that are determined by laboratory experiments. However, kinetic data about negative ions are often outdated or even lacking. I propose to measure reaction rate constants, and to obtain structural information concerning ionic species of the type CxHyNz-. A commercial high-resolution mass spectrometer of a new type (LTQ-Orbitrap) has recently been acquired at the Laboratoire de Planétologie de Grenoble in order to study positive ion chemistry. I will take advantage of the fact that the Orbitrap is perfectly adapted for the study of negative ions. This experimental work will be guided by kinetic modeling of Titan’s ionosphere conducted in close collaboration with planetary scientists. Another part of the project will be to gain some insight on the haze that surrounds Titan. Laboratory synthesized analog compounds, the so-called « tholins », are produced in plasmas of nitrogen/methane mixtures. We plan to use the high-resolution mass spectrometer to perform structural analysis of their volatile fraction, and also to investigate the processes underlying their nucleation and growth.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: https://op.europa.eu/en/web/eu-vocabularies/euroscivoc.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: https://op.europa.eu/en/web/eu-vocabularies/euroscivoc.
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Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Topic(s)
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Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Call for proposal
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Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
FP7-PEOPLE-IRG-2008
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Funding Scheme
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Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Coordinator
75794 Paris
France
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.