ISOtope quantification by combining NEw Spectroscopic Techniques

Acronyme : ISONEST

Laboratoires co-porteurs

• Laboratoire d'Etudes du Rayonnement et de la Matière en Astrophysique et Atmosphères - LERMA
  Equipe : SMILE (Spectroscopie Moléculaire et Instrumentation Laser pour l’Environnement)
  Porteur de projet :  Christof JANSSEN
  Participants : Yao-Veng TE, Corine BOURSIER, Pascal JESECK, Hadj ELANDALOUSSI, Christian ROUILLE, Patrick MARIE-JEANNE
• De la molécule aux nano-objets : réactivité, interactions et spectroscopies - MONARIS
  Pole 1 : “De la molecule aux agrégats »
  Participants : Mickael GUINET, Pascale SOULLARD, David JACQUEMART, Mathilde CHABOUD

Présentation du projet

Ozone is a key molecule in planetary atmospheres. It shows an unusual isotopic composition that impacts many other oxygen bearing compounds, such as stratospheric CO2, nitrates, nitrogen oxides, halogen oxides, water and even molecular oxygen. The transfer efficiency of this process, IR remote sensing of ozone isotopes and our fundamental understanding of the unusual isotopic effect depend on the knowledge on the isotope distribution within the ozone molecules, which hitherto remains unclear. By combining THz with Mid-IR laser and FTIR spectroscopy, we will determine absolute line strengths in the IR and thus provide the spectroscopic data required to solve this problem for the first time. !