Environmental Physicochemistry

The Environmental Physical Chemistry group brings together researchers in the fields of atmospheric physics and chemistry, and emission of pollutants from natural sources.

Recombination and electronic attachment

These are fundamental studies related to the chemistry of plasmas, whether terrestrial, such as in fusion reactors and materials processing devices, or planetary atmospheres and interstellar clouds. These studies are carried out using either the flow post-discharge techniques of our laboratory in Rennes, or those of electron-ion beams at the heavy ion storage rings. It is planned to use the new Langzhou gas pedal in China to study the branching ratios.

The Dissociative Recombination of Molecular Ions: An Experimental and Theoretical Review, A. I. Florescu-Mitchell and J.B.A. Mitchell, Physics Reports 430, 278 (2006).

Collaborations:

  • A. Viggiano, United States Air Force
  • M. Chabot, Institut de Physique Nucléaire d’Orsay
  • P. Pernot, Laboratory de Chimie-Physique d’Orsay
  • I. Schneider, Université du Havre
  • K. Beroff , Institut des Sciences Moléculaires d’Orsay
  • V. Kokoouline, Florida State University
  • P. Defrance, Université Catholique de Louvain, Belgique

Atmospheric chemistry

This new project aims to characterize pollutants emitted by sources such as green algae on beaches, a particularly important problem in Brittany. We have obtained funding for the acquisition of a portable proton transfer mass spectrometer, which will allow rapid, in-situ quantitative measurements of pollutant species. This technique closely resembles the post-discharge methods already used by our group. Other projects will involve the detection of pollutants from animal husbandry (in collaboration with INRIA and in cooperation with the University of Bejaia in Algeria for the study of emissions from open fires.

Emissions of pollutants from natural sources

This new project aims to characterize pollutants emitted by sources such as green algae on beaches, a particularly important problem in Brittany. We have obtained funding for the acquisition of a portable proton transfer mass spectrometer, which will allow rapid, in-situ quantitative measurements of pollutant species. This technique closely resembles the post-discharge methods already used by our group. Other projects will involve the detection of pollutants from animal husbandry (in collaboration with INRIA and in cooperation with the University of Béjaia in Algeria for the study of emissions from open fires.

Gas phase UV absorption cross-sections for a series of hydroxycarbonyls, L. Messadia. G. El Dib, A. Ferhati, E. Roth, A. Chakir , Chemical Physics Letters, 529, 16 (2012).

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