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
文献情報
Trevor Ridley, Kenneth P. Lawley, Robert J. Donovan, Vadim A. Alekseev
A range of vibrational levels of the D 0u+(3P2) and F′ 0u+(1D2) ion-pair states of I2 is shown to be easily generated by amplified spontaneous emission (ASE) from their more accessible partners, E 0g+(3P2) and f′ 0g+(1D2), in sufficient concentration for dispersed fluorescence studies of the D 0u+(3P2) → 0g+(bb) and F′ 0u+(1D2) → 0g+(bb) transitions to be carried out. T0 (J = 49) of this shallow-bound 0g+(bb) valence state is unambiguously determined and an improved Re value of 3.952 ± 0.005 Å is obtained from optimizing the fit of the intensities of the vibrational progressions in the 0g+(bb) state, and Te is found to be 27311.3 ± 2 cm−1, leading to De = 442.0 ± 2 cm−1.
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