CLAUS Jordan: Characterization, microsolvation and reactivity of aerosol precursors by microwave and infrared spectroscopy and quantum chemistry calculations.

PhD student: Jordan CLAUS, 01/10/2020 – …

Supervisors: L. Margulès (50%) - M. Goubet (50%)

Subject : Characterization, microsolvation and reactivity of aerosol precursors by microwave and infrared spectroscopy and quantum chemistry calculations.

Funding: Univ. Lille (50%) + Labex CaPPA (50%)

PhD project summary:

Volatile organic compounds (VOCs) play an important role in the physicochemical mechanisms in play in the atmosphere (formation of ozone, greenhouse gases). VOCs and their degradation products are also known as sources of secondary organic aerosols (SOA), themselves influencing the Earth's climate by absorption / scattering of radiation and formation / modification of the lifespan of clouds. In this context, the laboratory characterization of the molecular properties of VOCs as well as their degradation / nucleation processes is essential in the physico-chemistry of the atmosphere. This project, both experimental and theoretical, relies on microwave spectroscopy with the support of quantum calculations, using spectrometers and high-performance computing cluter available at the PhLAM laboratory. New state-of-the-art spectrometers are also under development. In addition, experiments will be carried out at the SOLEIL synchrotron, in particular on the Jet-AILES platform of which PhLAM is a partner, on the AILES infrared beamline. The thesis work is part of Labex CaPPA (Chemical and Physical Properties of the Atmosphere) WP1, which aims to characterize the gaseous precursors of aerosols by gas phase spectroscopy. This subject is also directly linked to the CPER ClimiBio (WP 1) and its renewal request Ecrin.