Mesure des radicaux hydroxyles (OH) et nitrates (NO3) : application à des études cinétiques de réactions chimiques d'intérêt atmosphérique au laboratoire // Measurement of hydroxyl (OH) and nitrate (NO3) radicals: application to kinetic studies of chemica
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ABG-136552
ADUM-71911 |
Thesis topic | |
| 2026-03-11 |
Université d'Orléans
ORLEANS - Centre Val de Loire - France
Mesure des radicaux hydroxyles (OH) et nitrates (NO3) : application à des études cinétiques de réactions chimiques d'intérêt atmosphérique au laboratoire // Measurement of hydroxyl (OH) and nitrate (NO3) radicals: application to kinetic studies of chemica
- Chemistry
Chimie atmospherique, Cinétiques, Chambre de simulation atmosphérique, Radicaux, Instrumentation, Spectroscopie
Atmospheric Chemistry, Kinetics, Atmospheric Simulation Chamber, Radicals, Instrumentation, Spectroscopy
Atmospheric Chemistry, Kinetics, Atmospheric Simulation Chamber, Radicals, Instrumentation, Spectroscopy
Topic description
Ce sujet de thèse est porté par l'équipe réactivité atmosphérique de l'ICARE qui possède de nombreuses installations, dont certaines uniques en France comme la chambre de simulation atmosphérique à irradiation solaire, HELIOS. Cette plateforme possède un important parc instrumental avec des instruments de pointe, dont certains développés expérimentalement au laboratoire. Parmi eux, deux instruments servant à mesurer les radicaux hydroxyles OH et nitrates NO3 qui sont des espèces réactives jouant donc un rôle clé dans la chimie de l'atmosphère. Si celui pour mesurer les radicaux NO3 est finalisé, suite à une collaboration avec la NOAA (USA), celui pour mesurer les radicaux OH, réalisé en collaboration avec le laboratoire IGE de Grenoble, reste à implanter sur HELIOS. Ces instruments seront au centre de ce sujet de thèse via des études cinétiques impliquant ces radicaux mais aussi d'autres espèces réactives, tels que les intermédiaires de Criegee. L'un des objectifs finals de cette thèse sera d'alimenter des bases de données pour les modélisateurs qui travaillent sur les différents scenarios de chimie atmosphérique.
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This thesis topic is supported by ICARE's atmospheric reactivity team, which has numerous facilities at its disposal, including some that are unique in France, such as the HELIOS solar radiation atmospheric simulation chamber. This platform has a large array of cutting-edge instruments, some of which were developed experimentally in the laboratory. Among them are two instruments used to measure hydroxyl radicals (OH) and nitrate radicals (NO3), which are reactive species that play a key role in atmospheric chemistry. While the instrument for measuring NO3 radicals has been finalised following collaboration with NOAA (USA), the instrument for measuring OH radicals, developed in collaboration with the IGE laboratory in Grenoble, has yet to be installed on HELIOS. These instruments will be the focus of this thesis through kinetic studies involving these radicals as well as other reactive species, such as Criegee intermediates. One of the ultimate goals of this thesis will be to feed databases for modellers working on different atmospheric chemistry scenarios.
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Début de la thèse : 01/10/2026
WEB : https://helios-cnrs.org/
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This thesis topic is supported by ICARE's atmospheric reactivity team, which has numerous facilities at its disposal, including some that are unique in France, such as the HELIOS solar radiation atmospheric simulation chamber. This platform has a large array of cutting-edge instruments, some of which were developed experimentally in the laboratory. Among them are two instruments used to measure hydroxyl radicals (OH) and nitrate radicals (NO3), which are reactive species that play a key role in atmospheric chemistry. While the instrument for measuring NO3 radicals has been finalised following collaboration with NOAA (USA), the instrument for measuring OH radicals, developed in collaboration with the IGE laboratory in Grenoble, has yet to be installed on HELIOS. These instruments will be the focus of this thesis through kinetic studies involving these radicals as well as other reactive species, such as Criegee intermediates. One of the ultimate goals of this thesis will be to feed databases for modellers working on different atmospheric chemistry scenarios.
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Début de la thèse : 01/10/2026
WEB : https://helios-cnrs.org/
Funding category
Funding further details
Enseignement supérieur
Presentation of host institution and host laboratory
Université d'Orléans
Institution awarding doctoral degree
Université d'Orléans
Graduate school
552 Energie, Matériaux, Sciences de la Terre et de l'Univers - EMSTU
Candidate's profile
Goût pour l'expérimentation, les connaissances en techniques/protocoles
analytiques (gaz, aérosols), chimie atmosphérique
Compétences dans les domaines précédemment cités.
Curiosité
Aisance à l'oral et à la rédaction
A taste for experimentation, knowledge of analytical techniques/protocols (gas, aerosols), atmospheric chemistry Skills in the above-mentioned areas. Curiosity Good verbal and written communication skills
A taste for experimentation, knowledge of analytical techniques/protocols (gas, aerosols), atmospheric chemistry Skills in the above-mentioned areas. Curiosity Good verbal and written communication skills
2026-04-21
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