Rotational CARS: a comparison of different techniques with emphasis on accuracy in temperature determination

Journal Article · Tue Aug 01 04:00:00 EDT 1989 · Appl. Opt.; (United States)

DOI:https://doi.org/10.1364/AO.28.003206· OSTI ID:6006876

Alden, M; Bengtsson, P; Edner, H; Kroll, S; Nilsson, D

Different rotational CARS techniques have been evaluated in terms of single-shot temperature accuracy and signal intensity in room temperature nitrogen and in flames. The different techniques include both dual broadband techniques, using one or two broadband dye lasers, and conventional rotational CARS with different dye lasers. These techniques are also compared with vibrational CARS concerning temperature accuracy and with theoretical predictions. The results indicate that the dual broadband techniques are to be preferred over conventional rotational CARS and also over vibrational CARS at room temperature. At flame temperatures the vibrational CARS technique seems to be the technique yielding highest temperature accuracy. The experimental results are also generally in good agreement with the calculated values.

• Research Organization: Lund Institute of Technology, Combustion Center, P.O. Box 118, S-221, 00 Lund, Sweden(SE)
• OSTI ID: 6006876
• Journal Information: Appl. Opt.; (United States), Journal Name: Appl. Opt.; (United States) Vol. 28:15; ISSN APOPA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400800* -- Combustion
Pyrolysis
& High-Temperature Chemistry
ALKANES
CHEMICAL REACTIONS
COMBUSTION
DIAGNOSTIC TECHNIQUES
ELEMENTS
ENERGY LEVELS
EXCITED STATES
FLAMES
HYDROCARBONS
LASER SPECTROSCOPY
METHANE
NITROGEN
NONMETALS
ORGANIC COMPOUNDS
OXIDATION
RAMAN SPECTROSCOPY
ROTATIONAL STATES
SPECTROSCOPY
TEMPERATURE MEASUREMENT
THERMOCHEMICAL PROCESSES