title: Characterization of a shallow-bound 0g+ valence state of I2 using emission from the D 0u+(3P2) and F' 0u+(1D2) ion-pair states populated by amplified spontaneous emission.
abstract: A range of vibrational levels of the D 0(u)(+)((3)P(2)) and F' 0(u)(+)((1)D(2)) ion-pair states of I(2) is shown to be easily generated by amplified spontaneous emission (ASE) from their more accessible partners, E 0(g)(+)((3)P(2)) and f' 0(g)(+)((1)D(2)), in sufficient concentration for dispersed fluorescence studies of the D 0(u)(+)((3)P(2)) --> 0(g)(+)(bb) and F' 0(u)(+)((1)D(2)) --> 0(g)(+)(bb) transitions to be carried out. T(0) (J = 49) of this shallow-bound 0(g)(+)(bb) valence state is unambiguously determined and an improved R(e) value of 3.952 +/- 0.005 A is obtained from optimizing the fit of the intensities of the vibrational progressions in the 0(g)(+)(bb) state, and T(e) is found to be 27311.3 +/- 2 cm(-1), leading to D(e) = 442.0 +/- 2 cm(-1).
authors.affiliation: School of Chemistry, The University of Edinburgh, West Mains Road, Edinburgh, Scotland, UKEH9 3JJ. T.Ridley@ed.ac.uk
authors.forename: Trevor
authors.initials: T
authors.lastname: Ridley
authors.forename: Kenneth P
authors.initials: KP
authors.lastname: Lawley
authors.forename: Robert J
authors.initials: RJ
authors.lastname: Donovan
authors.forename: Vadim A
authors.initials: VA
authors.lastname: Alekseev
mesh_terms: D007455:Iodine / Q000737:chemistry*; D008956:Models, Chemical; D012680:Sensitivity and Specificity; D013050:Spectrometry, Fluorescence / Q000379:methods; D014732:Vibration
chemical_list: D007455:Iodine