Abstract
The A 2Σ +- X 2Π i emission system of the OD radical has been recorded at high resolution from a discharge through flowing D 2O at 0.1 torr pressure. The 0-0, 1-1, and 2-2 bands of the Δ v = 0 sequence have been analyzed in detail for the first time. A table of the vacuum wavenumbers and wavelengths in air of the rotational lines of these bands is presented, together with some additional measurements for the 0–1 band. The data are used to obtain a self-consistent set of term values for v′ and v″ = 0, 1, which reproduces the observed line frequencies with an average deviation of less than 0.02 cm −1. Earlier, lower resolution data for bands with v′ and v″ = 2, 3 are also combined with the present measurements to give approximate term values for these higher levels.
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