Abstract

The photoionization spectra of OH and OD have been reported from 680 to 950 AA (18.23 to 13.05 eV) at a wavelength resolution of 0.07 AA. Through interpretation of both spectra, the Rydberg series and their higher vibrational members have been reported for three of the excited ionic states, a1 Delta , A3 Pi i, and b1 Sigma +. A vibrational progression has also been observed in both OH and OD which is apparently related to a fourth excited ionic state, c1 Pi . Finally, the dissociative ionization limits, corrected to 0 K, for H2O and D2O have been measured to be 18.11+or-0.01 and 18.21+or-0.01 eV, respectively, and shown to be in good agreement with previously reported results.

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