Near-dissociation photoabsorption spectra of LiH, NaH and KH

New data on the photoabsorption spectra of LiH, NaK and KH are reported involving ground state X 1 Sigma and excited state A 1 Sigma near the dissociation limits. Rotational and vibrational analysis of the observed bands is presented: LiH X 1 Sigma V=1 to 1 Sigma (16Sigma V=0/V=1 to A 1 Sigma (13Sigma V=0/V=1 to A 1 Sigma (24Sigma state potential energy curve.