The Setup

The setup is recently acquired from Syracuse University Astrophysics and Surface Science Research Laboratory (PI: Prof. Gianfranco Vidali). It consists of a main UHV chamber and two 3-stage differently pumped, highly collimated beam lines. Each beam line houses a radio-frequency dissociation source that can produce hydrogen or oxygen atoms. Reactants (atoms or simple molecules) are deposited onto a cold substrate at cryogenic temperatures, and the reaction products on the surface are detected by a quadrupole mass spectrometer or a Fourier Transform InfraRed (FTIR) spectrometer.

Main features of the setup

  • Main UHV chamber pressure 1x10-10 mbar
  • Two 3-stage highly collimated atomic/molecular beam lines
  • FTIR in Reflection Absorption Infrared Spectroscopy (RAIRS) configuration
  • Hiden Quadrupole mass spectrometry (QMS) mounted on a rotary flange
  • Sample temperature controllable between 5 K and 400 K
  • Computer automated gas deposition
  • Capability of beam modulation and time-resolved measurements
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