The measured 10 mu m refractive index of some simple molecules (CO, H2O, CH4, C2H2) and their calculated extension to the whole IR frequency region

Year: 2006

Authors: Marchetti S., Simili R.

Autors Affiliation: IPCF-CNR, Area della Ricerca del CNR, Via Moruzzi 1, 56124 Pisa, Italy

Abstract: The refractive index of some simple molecules has been determined with different CO, laser lines in the 10 mu m region. Some gases show a frequency dependence of the refractive index. This frequency behaviour can be related in a simple way to the presence of an absorption band adjacent to the 10 mu m region. This simple relation allows to derive with good accuracy the integrated absorption intensity S,. of the involved bands. In this way the model validity is confirmed and the model can be used to calculate the theoretical refractivity over the whole IR region (< 5000 cm(-1)) by using the S-x(0) values of all the IR bands reported in literature. (c) 2005 Elsevier B.V. All rights reserved. Journal/Review: INFRARED PHYSICS & TECHNOLOGY

Volume: 48 (2)      Pages from: 115  to: 121

KeyWords: refractive index; infrared;
DOI: 10.1016/j.infrared.2005.05.002

Citations: 2
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