Electronic states of gaseous AlF

Abstract
New triplet transitions in AlF have been the subject of rotational analysis and some states which had formerly been assigned as singlets are now found to be case b triplet states with very small splittings. Perturbations in the first excited singlet state, A 1 Pi , by a triplet state w 3 Sigma + enable the singlet and triplet stacks to be related. Tinfinity for the first excited state, a 3 Pi I, is 27254 cm-1.

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