Temperature-dependent collision-broadening parameters of H[sub 2]O lines in the 1. 4-[mu]m region using diode laser absorption spectroscopy

Journal Article · Sat Oct 01 04:00:00 EDT 1994 · Journal of Molecular Spectroscopy; (United States)

DOI:https://doi.org/10.1006/jmsp.1994.1234· OSTI ID:6927852

Langlois, S; Birbeck, T P; Hanson, R K ^[1]

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1. Stanford Univ., CA (United States). Dept. of Mechanical Engineering

Radiative properties of water vapor in the infrared spectrum are important in a variety of applications, including atmospheric sounding experiments, radiative sensing of combustion processes, and optical diagnostics for gasdynamic and aerodynamic studies. Here, spectrally resolved measurements of water vapor absorption spectra near 1.4 [mu]m have been performed with a tunable, distributed-feedback InGaAsP diode laser. A lineshape analysis was used to infer the collision-broadening coefficient of 11 rovibrational transitions in the [nu] + [nu][sub 3] and 2[nu][sub 1] vibration bands perturbed separately by N[sub 2], O[sub 2], CO[sub 2], and H[sub 2]. The temperature dependence of the broadening coefficients was determined using a temperature-controlled static cell and a pressure-driven shock tube over the range 300--1,200 K. The measured coefficients are in good agreement with the previous calculations of Delaye. Also, agreement is found between prior experimental data, obtained for the same rotational transitions but different vibration bands, and the results.

• OSTI ID: 6927852
• Journal Information: Journal of Molecular Spectroscopy; (United States), Journal Name: Journal of Molecular Spectroscopy; (United States) Vol. 167:2; ISSN JMOSA3; ISSN 0022-2852
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400800 -- Combustion
Pyrolysis
& High-Temperature Chemistry
54 ENVIRONMENTAL SCIENCES
540110*
ABSORPTION SPECTRA
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
COLLISIONS
COMBUSTION
DATA
EARTH ATMOSPHERE
ELEMENTS
EXPERIMENTAL DATA
FLUIDS
GASES
HYDROGEN
INFORMATION
INFRARED SPECTRA
LASERS
LINE BROADENING
MOLECULE COLLISIONS
MOLECULE-MOLECULE COLLISIONS
NITROGEN
NONMETALS
NUMERICAL DATA
OXIDATION
OXIDES
OXYGEN
OXYGEN COMPOUNDS
REMOTE SENSING
SEMICONDUCTOR DEVICES
SEMICONDUCTOR LASERS
SOLID STATE LASERS
SPECTRA
THERMOCHEMICAL PROCESSES
VAPORS
WATER VAPOR