High resolution molecular photoelectron spectroscopy II. Water and deuterium oxide

Abstract
Helium 584 $\overset{\circ}{\mathrm A}$ radiation produces photoelectron spectra from water and deuterium oxide, which show extensive vibrational fine structure. The results are discussed in terms of the electronic structure of the molecule, and the bonding characteristics of the various molecular orbitals. Water is inferred to have only three configurationally distinct ionization potentials smaller than 21.22 eV.

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