Related Experiment Video
Updated: Aug 14, 2026

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy
Published on: June 28, 2016
12C16O2 in Emission in the 4.5-µm Region: Transitions v1vl2v3 --> v1vl2(v3-1) with (2v1 + v2) = 6 Occurring between
1Unité propre du C.N.R.S. (UPR 0136), Associé aux Universités Paris-Sud et Pierre et Marie Curie, Bât 350 Université Paris-Sud, Orsay Cédex, 91405, France
Abstract:
Eight emission spectra of CO2 + N2 mixtures excited by dc discharge were recorded using a Fourier Transform Spectrometer (Bruker Spectrometer 120HR) with a resolution of 0.003 cm-1 in the 4.5-µm region. Results (wavenumbers, band centers, spectroscopic constants) concerning 13 new vibrational transitions which have not been observed earlier and which occur between highly excited levels (hence their very small population) are reported. The derived spectroscopic parameters allow the reproduction of the experimental wavenumbers with a RMS < 3 x 10(-4) cm-1. Copyright 1998 Academic Press.
Related Concept Videos
Emission Spectra
UV–Vis Spectroscopy of Conjugated Systems
One of the factors influencing λmax is the extent of conjugation in the...
Molecular Spectroscopy: Absorption and Emission
UV–Vis Spectroscopy: Molecular Electronic Transitions
IR Absorption Frequency: Hybridization
Among the sp, sp2, and sp3 hybridized orbitals, sp orbitals have the maximum s character (50%). Consequently, the electrons are held more closely to the nucleus, resulting in stronger and shorter C–H bonds that stretch at a...
Deactivation Processes: Jablonski Diagram

