Fourier transform absorption spectra of H218O and H217O in the 3ν + δ and 4ν polyad region

Fourier transform absorption spectra of H218O-enriched and H217O-enriched water vapor in the 3ν + δ and 4ν polyad region have been analyzed. With the aid of theoretically calculated linelists, we have assigned 1014 lines attributed to H218O and 836 lines of 855 attributed to H217O. Seven new band origins are found for H217O and one for H218O.