06 IR ATR_page_12

06 IR ATR | page 12 | https://thedailydialectics.com/pdfs/education/chemistry/analytical-chem/analytical-methods-for-analysis-UH/06 IR ATR/06 IR ATR.pdf

Chem4229-Instrumental Methods of Analysis ¢ Connes advantage. The wavenumber scale of an in- terferometer is derived from a HeNe (helium neon) laser that acts as an internal reference for each scan. The wavenumber of this laser is known very accu- rately and is very stable. As a result, the wave-…