High resolution Fourier transform spectroscopy of HD16O: Line positions, absolute intensities and self broadening coefficients in the 8800-11,600 cm−1 spectral region

High-resolution water vapor absorption spectra have been measured at room temperature in the 8800-11,600 cm−1 spectral region. They were obtained using the mobile BRUKER IFS 120M Fourier transform spectrometer (FTS) from ULB-SCQP coupled to the 50 m base long multiple reflection White type cell in GSMA laboratory. The absorption path was 600 m and different H2O/HDO/D2O mixtures were used. Measurements of line positions, intensities and self-broadening coefficients were performed for the HD16O isotopologue. 6464 rovibrational assignment of the observed lines was made on the basis of global variational predictions and allowed the identification of new energy levels. 3ν3, 2ν1+ν3, 3ν1+ν2, ν1+2ν3 and 2ν2+2ν3 are the five strongest bands. The present paper provides a complementary data set on water vapor for atmospheric and astrophysical applications.

► First determination of absolute line intensities for HD16O. ► Self-broadening coefficients of HD16O. ► 6465 HD16O lines in the 1 μm region (29 bands). ► Total integrated intensity is 1×10−20 cm/molec. ► BRUKER 120M spectrometer coupled to the GSMA 50 m base long cell (600 m, 292 K, 10 hPa).