The spectrum of boron monosulphide has been excited in microwave discharge and photographed at moderate dispersion. TheC2Πr−X2Σ+,B2Σ+−A2Πi andA2Πi−X2Σ+ band systems extending from 2100–9000 Å have been obtained for B32S and B34S species. Isotope shifts for all these band systems have been measured. Comparison of the observed isotope shifts with the theoretically calculated isotope shifts confirms the emitter as well as the vibrational assignments of all these band systems.
Volume 94, 2020
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