(UHV-RAIRS) ultrahigh vacuum reflection-absorption infrared spectroscopy permits vibrational spectroscopic studies at grazing incidence on adsorbed molecules on well-defined solid surfaces.
In UHV-RAIRS, the optical path is entirely evacuated to avoid background signals from gas phase species and results in a superior sensitivity and stability of the system. Essential prerequisites for monitoring molecular species adsorbed, e.g., on oxide single-crystal surfaces are wide pressure (UHV to ambient conditions) and temperature ranges (1000-100 K).
Ultra-high vacuum-reflection absorption IR spectroscopy (UHV-RAIRS) @ DESY NanoLab
Vibrational spectroscopic study at grazing incidence on well-defined solid surfaces. The unique feature of the IR apparatus is the entirely evacuated optical path to avoid background signals from gas phase species
External MCT detector for RAIRS measurements on well-ordered solid surfaces
Internal DTG detector for Fourier-transform IR spectroscopy (FTIRS) on powder surfaces
In-situ measurements at variable pressure range: 10-10 mbar < P < 1 bar
In-situ measurements at variable temperature range: 110 K to 1000 K (liquid N2 cooling)
IR - IR Beamline @ Swiss Light Source Synchrotron
IR spectroscopy is mainly used to investigate the chemical composition of samples, the technique is easy-to-use, non-destructive, and is useful in astronomy, biology, chemistry, and forensic sciences, for example; IR spectroscopy is used as well to investigate low energy excitations in the condensed phase