UHV reflection-absorption IR spectroscopy

Optical spectroscopy (Electronic & Chemical & Magnetic Characterization)

(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).