Coherent anti-Stokes Raman spectroscopic modeling for combustion diagnostics

Journal Article · Sun May 01 04:00:00 EDT 1983 · Opt. Eng.; (United States)

DOI:https://doi.org/10.1117/12.7973113· OSTI ID:6479878

Hall, R J

The status of modelling the coherent anti-Stokes Raman spectroscopy (CARS) spectra of molecules important in combustion, such as N2, H2O, and CO2, is reviewed. It is shown that accurate modelling generally requires highly precise knowledge of line positions and reasonable estimates of Raman linewidths, and the sources of these data are discussed. CARS technique and theory is reviewed, and the status of modelling the phenomenon of collisional narrowing at pressures well above atmospheric for N2, H2O, and CO2 is described. It is shown that good agreement with experiment can be achieved using either the Gordon rotational diffusion model or phenomenological models for inelastic energy transfer rates.

• Research Organization: United Technologies Research Center, East Hartford, CT
• OSTI ID: 6479878
• Journal Information: Opt. Eng.; (United States), Journal Name: Opt. Eng.; (United States) Vol. 22; ISSN OPEGA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400800* -- Combustion
Pyrolysis
& High-Temperature Chemistry
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
COHERENT SCATTERING
COMBUSTION
FLUIDS
GAS ANALYSIS
GASES
LASER SPECTROSCOPY
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PRESSURE EFFECTS
RAMAN SPECTROSCOPY
SCATTERING
SPECTROSCOPY
THERMOCHEMICAL PROCESSES
VAPORS
WATER VAPOR