Abstract
We report new measurements on laser-assisted molecular dissociative sequential excitation and ionization spectra of strontium vapor. A single Nd:YAG pumped dye laser in conjunction with an atomic beam apparatus have been used to investigate the even parity 5snd 3,1 D 2 Rydberg series resulting from the 5s5p 1 P 1 resonance level. The relative intensities changes among the 5snd 3 D 2 and 1 D 2 Rydberg series are attributed to the interactions with the 4d6s 1,3 D 2 perturbers, respectively. The interchannel interactions between the 5snd 1 D 2 series and the 4d6s 1 D 2 level and among the 5snd 3 D 1,2,3 series and the 4d6s 3 D 1,2,3 intruders have been separately parameterized using the two-channel quantum defect theory.
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