Intracavity laser absorption spectroscopy of D(2)O between 11400 and 11900 cm(-1)

作者：Naumenko O V; Mazzotti F; Leshchishina O M; Tennyson J; Campargue A^*

来源：Journal of Molecular Spectroscopy, 2007, 242(1): 1-9.

DOI：10.1016/j.jms.2007.01.001

• water
• D(2)O
• intracavity laser absorption spectroscopy
• ICLAS
• rovibrational assignment
• deuterated water

The weak absorption spectrum of dideuterated water, D(2)O, has been recorded by Intracavity Laser Absorption Spectroscopy (ICLAS) between 11400 and 11900 cm(-1). This spectrum is dominated by the 3 nu(1) + nu(2) + nu(3) and the nu(1) + nu(2) + 3 nu(3) centered at 11500.25 and 11816.64 cm(-1), respectively. A total of 530 energy levels belonging to eight vibrational states were determined. The rovibrational assignment process of the 840 lines attributed to DO was mostly based on the results of new variational calculations consisting in a refinement of the potential energy surface of Shirin et al. [J. Chem. Phys., 120 (2004) 206] on the basis of recent experimental observations, and a dipole moment surface from Schwenke and Partridge [J. Chem. Phys. 113 (2000) 6592]. The overall agreement between these calculations and the observed spectrum is very good both for the line positions and the line intensities.