Add time:07/27/2019         Source:sciencedirect.com

Electronic transition spectrum of iridium monoboride in the spectral region between 400 and 545 nm has been recorded and analyzed using laser vaporization/reaction free jet expansion source and laser induced fluorescence spectroscopy. Thirteen vibrational bands belonging to four electronic transitions, namely the [18.8]3Δ3 – X3Δ3, [21.1]3Φ4 – X3Δ3, [22.8]3Φ3 – X3Δ3, and [22.4]1Φ3 – a1Δ2 transitions, have been identified and rotationally analyzed. Spectra of all four isotopic molecules were observed.

► New molecular transition bands of IrB. ► Four new electronic transitions have been observed and analyzed. ► Molecular constants of the upper and lower states were determined.

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