UHV reflection-absorption IR spectroscopy

Electronic & Chemical & Magnetic Characterization (Optical spectroscopy)

(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).

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          provided at NFFA-Europe laboratories by:
CSIC-ICMM
Spain
FORTH
Greece
TUG
Italy
EURONANOLAB
France
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          provided at Large Scale Facilities by:
ALBA
Spain
DESY + PETRA III
Germany
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
Bruker, VERTEX 80v
~ 900 cm-1 - 5 cm-1
External MCT detector for RAIRS measurements on well-ordered solid surfaces Internal DTG detector for Fourier-transform IR spectroscopy (FTIRS) on powder surfaces
Spectral resolution: 0.2 cm-1
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)
10-10- 10-11 mbar base pressure
Gas dosing system permitting in-situ experiments
Direct sample transfer under UHV from and to the UHV system