• Chemistry - Materials
  • Complex systems and software engineering
  • Energy, Ecology, Environment
  • Quality of life - Health - Food

DESIRS (Dichroïsme Et Spectroscopie par Interaction avec le Rayonnement Synchrotron)

Technological platform


DESIRS (Dichroism and Spectroscopy by Interaction with Synchrotron Radiation) is an undulator light line covering the VUV range (5-40 eV) with a unique combination of very high resolution, spectral purity, flux and fully variable polarisation.
DESIRS offers new opportunities for the study of photon-induced processes via valence electrons on mainly gas-phase samples, such as cold molecules, radicals, laser-excited species, biomolecules, ionic biopolymers, aggregates and nanoparticles as well as in the condensed phase. This includes high-resolution spectroscopy, molecular dynamics and reactivity, and photoionisation dynamics studies. In addition, the availability of calibrated polarisations (linear, circular) of the photon beam is a unique feature of the beamline allowing the study of molecular chirality and anisotropic properties of matter via different types of dichroism experiments.


  • Mr Laurent NAHON

Innovation themes

Map and access

Route de l'Orme aux Merisiers
Saint-Aubin BP 48

Formations offers

Offres de formations


Establishments of affiliation

Graduate schools