Tunable diode laser spectroscopy of NO2 at 6.2 μm

Abstract High-resolution spectra in the ν 3 region of 14 N 16 O 2 were measured by using a diode laser as a source to a vacuum grating spectrometer. Spin-rotation constants for the ν 3 and ν 2 + ν 3 states were determined from the observed data. Absolute strengths and transition moments for the ν 3 and ν 2 + ν 3 − ν 2 bands were derived from the observed line strengths at 296 K. Self-broadened and N 2 -broadened half-widths were measured for several of the ν 3 band lines at room temperature. Temperature-dependent half-widths for two N 2 -broadened ν 3 lines are also reported.

[1]  J. J. Olivero,et al.  Empirical fits to the Voigt line width: A brief review , 1977 .

[2]  V. M. Devi,et al.  Convolution of a Doppler line by a Gaussian instrument function , 1980 .

[3]  R. Curl,et al.  A determination of the spin–rotation parameters for NO2 in the X̃ 2A1 state by microwave–optical double resonance , 1981 .

[4]  A. Guttman.  Absolute infrared intensity measurements on nitrogen dioxide and dinitrogen tetroxide , 1962 .

[5]  R. Wilson,et al.  Spatial-Frequency Response Of The Limb Infrared Monitor Of The Stratosphere (LIMS) Radiometer , 1979 .

[6]  Robert H. Hunt,et al.  Line strengths, spin-splittings, and forbidden transitions in the (101) band of 14N16O2☆ , 1980 .

[7]  V. Malathy Devi,et al.  Diode laser measurements of intensities, N2-broadening, and self-broadening coefficients of lines of the ν2 band of 14N16O2 , 1981 .

[8]  W. J. Lafferty,et al.  High-resolution infrared spectrum of the ?3 and ?2 + ?3 - ?2 bands of 14N16O2 , 1976 .

[9]  R. Eng,et al.  Tunable diode laser spectroscopy in the infrared: some practical considerations of techniques and calibration with upsilon(2) lines of HCN. , 1979, Applied optics.

[10]  K. Schofield.  Evaluated Chemical Kinetic Rate Constants for Various Gas Phase Reactions , 1973 .

[11]  D. Murcray,et al.  Absolute integrated intensity and individual line parameters for the 6·2μ band of NO2 , 1975 .

[12]  V. Malathy Devi,et al.  Diode laser spectra of the ν2 band of 14N16O2: The (010) state of NO2 , 1980 .

[13]  A. Pine,et al.  Spectral intensities of the 4-μm ν1 + ν3 combination band of SO2 , 1980 .

[14]  W. Planet,et al.  Temperature dependence of intensities and widths of N2-broadened lines in the 15 μm CO2 band from tunable laser measurements , 1978 .