title: Analysis of hot D2O emission using spectroscopically determined potentials.
abstract: Fourier transform emission spectra of D2O vapor were recorded at a temperature of 1500 degrees C in the wavenumber range 380-1880 cm(-1). 15 346 lines were measured, of which the majority were identified as belonging to D2O. The spectrum was analyzed using variational nuclear motion calculations based on spectroscopically determined potential-energy surfaces. Initial assignments were made using a potential surface obtained by fitting a high accuracy ab initio potential. The new assignments were used to refine the potential surface, resulting in additional assignments. A total of 6400 D2O transitions were assigned and 2144 new D2O energy levels were obtained. Transitions involving the 4nu2 and 5nu2 bending states, with band origins of 4589.30 (+/-0.02) and 5679.6 (+/-0.1) cm(-1), respectively, were assigned for the first time.
authors.affiliation: Institute of Applied Physics, Russian Academy of Science, Uljanov Street 46, Nizhnii Novgorod, Russia 603950.
authors.forename: Sergei V
authors.initials: SV
authors.lastname: Shirin
authors.forename: Nikolai F
authors.initials: NF
authors.lastname: Zobov
authors.forename: Oleg L
authors.initials: OL
authors.lastname: Polyansky
authors.forename: Jonathan
authors.initials: J
authors.lastname: Tennyson
authors.forename: Treana
authors.initials: T
authors.lastname: Parekunnel
authors.forename: Peter F
authors.initials: PF
authors.lastname: Bernath