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Laboratory absorption spectra of H2O-D2O mixtures have been recorded in the spectral region 8800-1500 cm-1 by Fourier transform spectroscopy at high resolution (0.03 cm-1 ). The 50 m base long cell from Reims was used to record spectra with total pressure £ absorption path products of about 6000 torr m. In the continuation of our previous work concerning water vapor 1 ; 2 ; 3 ; 4 ; 5 ; 6 ; 7 ; 8 ; 9 ; 10 , the present study deals with the Deuterium enriched spectra. Two spectra with diÆerent mixing ratios for H 2 O, HDO and D 2 O species were recorded. The identiØcation of the HDO and D 2 O lines has been made by comparison of ratios between pure and enriched spectra. Partial pressures were carefully determined using (i) H2 ^16O previously determined line intensities, (ii) HDO and D 2 O line intensity ratios, and (iii) total pressures. The lines identiØcation was checked through the evolution of the integrated absorption coe±cients with the partial pressures. The observed lines have been Øtted to Voigt line proØles from which line positions (cali- brated afterwards), integrated absorption cross-sections and self-broadening coe±cients have been determined. For the two deuterated species the integrated absorption cross sections could be measured down to 5 10-27 cm/molecule. Comparisons with the most recent experimental data and calculations are presented.

Line parameters for water vapour in natural abundance have recently been determined for the 9250-13 000 cm(-1) region [M.-F. Wrienne, A. Jenouvrier, C. Hermans, A.C. Vandaele, M. Carleer, C. Clerbaux, P.-F. Coheur, R. Colin, S. Fally, M. Bach, J. Quant. Spectrosc. Radiat. Transfer 82 (2003) 99] and the 13 000-26 000 cm(-1) region [P.-F. Coheur, S. Fally, M. Carleer, C. Clerbaux, R. Colin, A. Jenouvrier, M.-F. Wrienne, C. Hermans, A.C. Vandaele, J. Quant. Spectrosc. Radial. Transfer 74 (2002) 493] using a high-resolution Fourier-transform spectrometer with a long-path absorption cell. These spectra are analysed using several techniques including variational line lists and assignments made. In total, over 15 000 lines were assigned to transitions involving more than 150 exited vibrational states of (H2O)-O-16. Twelve new vibrational band origins are determined and estimates for a further 16 are presented. (c) 2005 Elsevier Inc. All rights reserved.