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RESEARCH PRODUCT
Application of time-resolved spectroscopy to concentration measurements in gas mixtures
Bruno LavorelEdouard HertzR. ChauxOlivier Fauchersubject
DYNAMICSmolecular concentrationMaterials scienceAnalytical chemistryGeneral Physics and Astronomy01 natural sciencesInduced polarizationsymbols.namesakeINDUCED POLARIZATION SPECTROSCOPYfemtosecond laser0103 physical sciencesMOLECULE010306 general physicsSpectroscopyPOPULATIONINTERFERENCE010304 chemical physicsTriatomic moleculeFEMTOSECONDDiatomic moleculeINVERSE RAMAN-SPECTROSCOPYROTATIONAL COHERENCEFemtosecondsymbolsCO2Rotational spectroscopyTime-resolved spectroscopyRaman spectroscopystimulated Raman effectdescription
1296-2147; Concentration measurements using femtosecond Raman Induced Polarization Spectroscopy (RIPS) are performed in binary gas mixtures CO2-N2 and CO2-N2O at room temperature. The principle of these measurements is based on the nonlinear rotational time response of each molecular component of the mixture, The general form of this molecular response is a series of periodic transients with a period related to the rotational constant Be The relative strength of the individual responses allows an accurate determination of the concentration. Two techniques are presented using either two pulses (one pump and one probe) or three pulses (two pumps and one probe). (C) 2001 Academie des sciences/Editions scientifiques et medicales Elsevier SAS.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2001-09-01 |