Molspec Group Homepage

Molecular Spectroscopy and Chemical Kinetics Group studies at the IUP, University of Bremen are:

• to provide accurate reference spectra to be used in atmospheric remote sensing using and satellite spectrometers,
• to provide rate coefficient reference data needed to determine absolute cross sections of relevant atmospheric species,
• to determine atmospheric trace gas concentrations using optical methods,
• to study molecular physics and chemistry related to atmospheric problems,
• and - in close co-operation with the corresponding agencies and industrial facilities - the on-ground calibration of satellite spectrometers as done for GOME-1 and SCIAMACHY.

The technique in general is absorption spectroscopy: the interaction of light with atoms and molecules. In more detail the activities cover:

• High resolved UV/VIS/NIR Fourier Transform Spectroscopy (FTS); Time resolved UV/VIS/NIR Fourier Transform Spectroscopy (TR-FTS);
• High speed time resolved UV/VIS absorption spectroscopy using flash photolysis combined with a modern fast CCD time resolved detection set-up;
• Time resolved VUV/UV resonance absorption spectroscopy of atomic species;
• High resolved UV/VIS/NIR monitoring of atmospheric trace gases using Fourier Transform Spectroscopy (SOCCER);
• Mobile gas handling and optical absorption set-up for direct on-ground trace gas absorption measurements with satellite flight models (CATGAS);