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  • Atmospheric composition  (1)
  • Deuterated water vapor  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Line positions and intensities in theν 2 band of D2O improvied pumped D2O laser frequencies (1985)
    Springer
    International journal of infrared and millimeter waves 6 (1985), S. 199-233 
    Details
    ISSN: 1572-9559
    Keywords: Fourier transform infrared spectroscopy ; Deuterated water vapor ; Laser frequencies
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Using high resolution Fourier transform spectra, thev 2 band of D2O has been analysed leading to an extensive and precise set of rotational energy levels of the (0 1 0) vibrational state. These levels are reproduced very satisfactorily with a Watson type Hamiltonian and precise rotational constants as well as the band centerv 2 = 1178.3789 ± 0.0005 cm-1 are determined. A total of 61 line intensities were measured, much attention being paid to a possible contamination of the D2O sample by HDO. A least squares fit of the intensity data has provided us with an expansion of the transition moment operator of thev 2 band from which the first derivative $$\left( {\frac{{\partial ^x \mu }}{{\partial q_2 }}} \right)_e $$ = 0.1690 ± 0.0030 D has been deduced. Finally the complete synthetic spectrum of this band has been computed. All these results have been used to derive improved frequencies for the known pumped and far-infrared laser lines of D2O and to predict new possible coincidences with the available CO2 laser lines.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01010358
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Stratospheric N2O5, CH4, and N2O profiles from IR solar occultation spectra (1993)
    Springer
    Journal of atmospheric chemistry 16 (1993), S. 31-40 
    Details
    ISSN: 1573-0662
    Keywords: Atmospheric composition ; middle atmosphere ; stratosphere ; Fourier transform spectroscopy ; balloon measurements ; nitrogen oxydes ; methane
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Geosciences
    Notes: Abstract Stratospheric volume mixing ratio profiles of N2O5, CH4, and N2O have been retrieved from a set of 0.052 cm−1 resolution (FWHM) solar occultation spectra recorded at sunrise during a balloon flight from Aire sur l'Adour, France (44° N latitude) on 12 October 1990. The N2O5 results have been derived from measurements of the integrated absorption by the 1246 cm−1 band. Assuming a total intensity of 4.32×10−17 cm−1/molecule cm−2 independent of temperature, the retrieved N2O5 volume mixing ratios in ppbv (parts per billion by volume, 10−9), interpolated to 2 km height spacings, are 1.64±0.49 at 37.5 km, 1.92±0.56 at 35.5 km, 2.06±0.47 at 33.5 km, 1.95±0.42 at 31.5 km, 1.60±0.33 at 29.5 km, 1.26±0.28 at 27.5 km, and 0.85±0.20 at 25.5 km. Error bars indicate the estimated 1-σ uncertainty including the error in the total band intensity (±20% has been assumed). The retrieved profiles are compared with previous measurements and photochemical model results.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00696622
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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