International Journal of Infrared and Millimeter Waves

, Volume 6, Issue 3, pp 199–233

Line positions and intensities in theν2 band of D2O improvied pumped D2O laser frequencies


  • C. Camy-Peyret
    • Laboratoire de Physique Moléculaire et d'Optique Atmosphérique
  • J. -M. Flaud
    • Laboratoire de Physique Moléculaire et d'Optique Atmosphérique
  • A. Mahmoudi
    • Laboratoire de Physique Moléculaire et d'Optique Atmosphérique
  • G. Guelachvili
    • Laboratoire d'Infrarouge
  • J. W. C. Johns
    • Herzberg Institute of AstrophysicsNational Research Council of Canada

DOI: 10.1007/BF01010358

Cite this article as:
Camy-Peyret, C., Flaud, J.-., Mahmoudi, A. et al. Int J Infrared Milli Waves (1985) 6: 199. doi:10.1007/BF01010358


Using high resolution Fourier transform spectra, thev2 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 centerv2 = 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 thev2 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.

Key words

Fourier transform infrared spectroscopyDeuterated water vaporLaser frequencies

Copyright information

© Plenum Publishing Corporation 1985