Christophe GUIMBAUD (PhD.)
French citizen; Born on August 7, 1968

TEACHING ASSISTANT IN PHYSICAL CHEMISTRY
UFR. Sciences, Université d'Orléans
1 Rue de Chartres, BP 6759, 45067 Orléans Cedex 2, FRANCE
Laboratoire de Chimie-ionisation (salle C0 68)
Labo. CNRS : Laboratoire de Physique et Chimie de l'Environnement (LPCE) - UMR 6115
3A, Avenue de la Recherche Scientifique, 45071 Orléans Cedex 2, FRANCE

Research activities/Special interests

Upper Troposphere-Lower Stratosphere (UT-LS) gas phase and heterogeneous chemistry. >> significance

Main concern: Trace gas -ice interaction (physical processes and heterogeneous chemistry) related to cirrus clouds (UT-LS) and to the snowpack (Planetary Boundary Layer; Ice core)

Mass Spectrometry for research in atmospheric chemistry. >> current and futur investigations

1) Chemical Ionization Mass Spectrometry for trace gas quantification in the UT-LS.

Main task: Ion-Molecule Reaction kinetic studies using a pressure and temperature regulated ion flow tube reactor coupled to a quadrupole mass spectrometer.
Goals: Calibratation of airborne (plane/balloon) instruments using CIMS to quantify atmospheric trace gases (NO_y, oxygenated organics, HO_x); Development of chemical ionisation technics and ion-sources for airborne CIMS instruments.

2) Investigation of interaction properties of gases with surfaces of atmospheric relevance (ice) using a Time Of Flight - Secondary Ion Mass Spectrometer (TOF-SIMS)

Others:

Neutral-radical and radical-radical kinetic studies in flow tubes
Sub-micrometer aerosol (airborne particles) production and characterization
Trace gas - aerosol (airborne particles) kinetic studies in atmospheric pressure flow tubes

Last update: Sep. 2003