VIBRATIONAL STRUCTURE IN THE $B^{4}\Pi \leftarrow X^{4}\Sigma^{-}$ ELECTRONIC TRANSITION OF NbO

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2000

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Ohio State University

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During our studies of niobium methylidyne, NbCH, we were continually faced with the presence of the much stronger and frequently overlapping niobium oxide spectrum. This motivated us to begin a through investigation of NbO throughout the visible region in order to document the somewhat irregular nature of the vibrational structure of its electronic spectrum. The (n,0) bands, where n=1, 2, 3, of the $B^{4}\Pi \leftarrow X^{4} \Sigma^{-}$ electronic transition were recorded at high resolution. Two (3,1) hot band transitions corresponding to the $B^{4}\Pi_{-1/2} \leftarrow X^{4} \Sigma^{-}_{3/2}$ and $B^{4}\Pi_{1/2} \leftarrow X^{4} \Sigma^{-}_{1/2}$ sub bands were also studied using high resolution methods. The vibrational dependencies of the rotational and hyperfine structure as well as other interesting aspects of the spectra will be presented.

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Author Institution: Department of Chemistry, University of British Columbia

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