LERMA-Cergy

FORMOLISM

FORMOLISM is developed since 2001.
It is evolving in FORMOLISM2 in June 2020.

Major characteristics:

  • UHV.
  • Surfaces: 3 movable samples (e.g. graphite, gold, silicate). Surface temperature control: 10-800K.
  • 2 atomic or molecular beams aimed at the sample (e.g. H, N, O, CO,…).
  • In-situ controlled water ice growing system (amorphous, porous, crystalline…) or carbonaceous dust deposition (e.g. PAH coronene).

Detection tools:

  • Mass spectrometry (its use is fourfold) : Beam compositions, During Exposure Detection, Thermally Programmed Desorption, Internal energy of atoms or molecules.
  • Reflection Absorption Infra Red Spectroscopy.
  • Laser system (REMPI 2+1) coupled with a time of flight detection.

In development:

  • Angular distribution measurements.
  • New sources of atoms and radicals.

 

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