Triplet Rydberg states of the imidogen radical characterized via two-photon resonance-enhanced multiphoton ionization spectroscopy
作者： Simon G. Clement , Michael N. R. Ashfold , Colin M. Western , Russell D. Johnson , Jeffrey W. Hudgens
DOI: 10.1063/1.463532
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摘要: Five new triplet excited states of the ND radical (three in case NH) wave‐number range 85 000–91 000 cm−1 have been identified through analysis two‐photon resonance enhancements they provide to wavelength‐resolved multiphoton ionization spectrum X 3Σ− state NH(ND) radicals. The lowest energy these, B 3Π state, is found be a ‘‘regular’’ Rydberg which, on basis its observed quantum defect and deduced rotational spin–orbit coupling constant, surmised 3Π derived from 3pσ electron built 2Π ground‐state ion core. Perturbations are evident B 3Π–X 3Σ− origin bands both NH ND. In perturbing provides own enhancements, which enables definitive identification as C 3Σ− state. very small splitting for D 3Π taken indicate that (at least Franck–Condon region) wave function dominated by configuration involv...
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