HDO and D2O Low Pressure, Long Path Spectra in the 600-3100 cm-1 Region.

Measurements of line positions and absolute strengths of D2O from 700 to 3100 cm-1 were obtained with a Fourier transform spectrometer. The data were analyzed to obtain energy levels of the (000), (010), (020), (100), and (001) vibrational states of D216O and, first time assignments of the (010)-(000) band of D217O, including the energy levels of the (000) and (010) states. The measurements included transitions of the (010)-(000) band of D218O; however, observations from a previous study provided adequate information for the energy levels. The measured linestrengths of the (010)-(000) bands of D216O, D217O, and D218O were fitted to the model, which included up to 19 dipole-moment expansion coefficients. The observed linestrengths of the D216O interacting bands, (020)-(010), (100)-(010), and (001)-(010), were analyzed using a full perturbation treatment. Copyright 1999 Academic Press.