6533b7dcfe1ef96bd1272879

RESEARCH PRODUCT

High-resolution stimulated Raman spectroscopy of O2

Hubert BergerGaël RouilléR. Saint-loupGuy Millot

subject

Materials scienceAnalytical chemistryRotational transitionAtomic and Molecular Physics and OpticsHot bandsymbols.namesakeX-ray Raman scatteringNuclear magnetic resonancesymbolsRotational spectroscopyCoherent anti-Stokes Raman spectroscopyPhysical and Theoretical ChemistrySpectroscopyRaman spectroscopySpectroscopyRaman scattering

description

Abstract The S S and O O branches of the fundamental vibrational band of molecular oxygen in its electronic ground state have been resolved for the first time in Raman spectroscopy. The spectra have been observed, at room temperature and low pressure, with a stimulated Raman scattering (S.R.S.) spectrometer including a multipass cell. From these accurate Raman data combined with microwave data, we have improved the values of the vibrational, rotational, spin-spin, and spin-rotation interactions constants in the v = 1 vibrational state. Moreover, Raman Q branches of the first and second hot-bands have been recorded, allowing us to determine a set of molecular parameters for the v = 2 and v = 3 states, useful for Coherent Anti-Stokes Raman Spectroscopy (C.A.R.S.) diagnostics in combustion media.

https://doi.org/10.1016/0022-2852(92)90215-a