Vibrational spectrometry IRTF et RAMAN

Principle

FTIR (Fourier Transformed InfraRed Spectroscopy) is based on the absorption of an InfraRed beam by a sample. Sample’s molecules rotate and vibrate at specific frequencies corresponding to discrete energy levels (vibrational modes). Transmitted radiation wavelengths and intensities are measured by the spectrometer, that allows to identify functional groups (C-C, C-H, …), and thus to identify a material.

Exemple d’un spectre IRTF

EQUIPEMENTS