Combustion gas spectroscopy using tunable lasers. Progress report, February 1, 1982-December 31, 1982

Technical Report · Fri Jan 01 04:00:00 EST 1982

OSTI ID:5919119

Hanson, R K

This report summarizes progress during the past eleven months of an ongoing program to develop and apply tunable laser absorption spectroscopy for measurements of fundamental spectroscopic parameters of combustion gases. The emphasis of the work has been on the use of tunable infrared diode lasers although some work to develop tunable dye lasers for absorption spectroscopy at ultraviolet and visible wavelengths also has been performed. The principal objectives of the research have been: (1) to measure fundamental spectroscopic parameters (line strengths and collision halfwidths) of critical combustion species; and (2) to develop tunable laser absorption techniques for measuring species concentrations and temperature in combustion flows. During the past year, work has proceeded in several areas. Highlights include: (1) high-resolution measurements of HCN infrared absorption line strengths and lineshapes at room temperature using a tunable diode laser; (2) development of an advanced absorption lineshape model incorporating collision narrowing effects, as well as traditional Doppler and collision broadening, and its application to high-resolution absorption spectra of HCN; and (3) calculations and measurements of high-temperature infrared absorption spectra for C/sub 2/H/sub 2/. 3 figures.

• Research Organization: Stanford Univ., CA (USA). High Temperature Gasdynamics Lab.
• OSTI ID: 5919119
• Report Number(s): DOE/ER/70058-T1; ON: DE83014025
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400800* -- Combustion
Pyrolysis
& High-Temperature Chemistry
ABSORPTION SPECTRA
ABSORPTION SPECTROSCOPY
ACETYLENE
ALKYNES
AMBIENT TEMPERATURE
ARGON
CHEMICAL REACTIONS
COMBUSTION
CYANIDES
DISPERSIONS
DYE LASERS
ELEMENTS
ENERGY LEVELS
EXCITED STATES
FLUIDS
GASES
HYDROCARBONS
HYDROCYANIC ACID
HYDROGEN COMPOUNDS
INFRARED SPECTRA
INORGANIC ACIDS
LASERS
LIQUID LASERS
MIXTURES
NITROGEN
NONMETALS
ORGANIC COMPOUNDS
OXIDATION
RARE GASES
RESEARCH PROGRAMS
SPECTRA
SPECTROSCOPY
THERMOCHEMICAL PROCESSES
VIBRATIONAL STATES