CARS spectrometer for gases and flames

Péalat, M.; Taran, J. P.; Moya, Francisca

doi:10.1016/0030-3992(80)90108-5

Cited by 43 publications

(3 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The crossed polarization arrangement is a wellknown solution to cancel out this non resonant signal [19]. However it reduces the N2 resonant signal by a factor close to 16 and, therefore its use is not always justified for diagnostics at low pressure. In order to avoid the use of crossed polarizations, some time was devoted to finding ways of reducing the non resonant signal prior to the final measurements.…”

Section: Parallel or Crossed Polarizationsmentioning

confidence: 99%

See 1 more Smart Citation

Determination of N2(X) vibrational level populations and rotational temperatures using CARS in a D.C. low pressure discharge

et al. 1987

View full text Add to dashboard Cite

For the first time, vibrational level population distributions of a low pressure D.C. flowing discharge were measured up to ν = 14 using Coherent Anti-Stokes Raman Scattering (CARS). The vibrational populations of the ground state N2(X 1Σ+g, ν) were obtained by recording rotationally resolved CARS spectra of the different vibrational bands. In the discharge region, the vibrational distributions have a non Boltzmann behaviour, as expected. The vibrational parameters were found to lie in the range 4 000-5 000 K, and rotational temperature to be about 550 K. Similar results were observed in the post-discharge region up to ν = 10. The vibrational and rotational temperatures were about 3 000 and 350 K respectively. The problems experienced while recording CARS spectra in low density media are discussed and comparisons with previously published theoretical models are presented

show abstract

Section: Parallel or Crossed Polarizationsmentioning

confidence: 99%

“…The CARS beams are generated by the CARS laser assembly which is virtually identical to that described in [16]. Its main characteristics are as follows.…”

Section: Introductionmentioning

confidence: 99%

Determination of N2(X) vibrational level populations and rotational temperatures using CARS in a D.C. low pressure discharge

et al. 1987

View full text Add to dashboard Cite

show abstract

“…Applications of CARS are rapidly developing (269-271) and a background rejection method which results in an increase in signal-to-noise of >200 has been reported (272). CARS appears to be one of the best optical techniques for nonintrusive flame diagnostics and thermometry (273,274). CARS spectra have been obtained from within the cylinder of a firing internal combustion engine allowing temperatures to be determined from the Q-branch shape of N2 (275).…”

Section: Coherent Anti-stokes Raman Scattering (Cars) and Stimulated ...mentioning

confidence: 99%

Raman spectrometry

Gardiner¹

1982

Anal. Chem.

View full text Add to dashboard Cite

Temperature and Hydrogen Concentration Measurements by CARS in an Ethylene‐Air Bunsen Flame

Müller‐Dethlefs

Péalat

Taran

1981

Ber Bunsenges Phys Chem

View full text Add to dashboard Cite

Local temperatures and hydrogen concentrations in an ethylene‐air Bunsen flame have been determined from CARS measurements of the Q(0) to Q(4) [υ = 1 ← υ = 0] Raman transitions in hydrogen. A crossed beam, BOXCARS, technique of high spatial resolution including non‐resonant background cancellation is employed. The linewidth correction is taken into account for the limit of Doppler broadening. The results agree well with thermodynamic equilibrium calculations.

show abstract

CARS spectrometer for gases and flames

Cited by 43 publications

References 10 publications

Determination of N2(X) vibrational level populations and rotational temperatures using CARS in a D.C. low pressure discharge

Determination of N2(X) vibrational level populations and rotational temperatures using CARS in a D.C. low pressure discharge

Raman spectrometry

Temperature and Hydrogen Concentration Measurements by CARS in an Ethylene‐Air Bunsen Flame

Contact Info

Product

Resources

About