Multiphoton optical and photoelectron spectroscopy of 4s–3d and 5s–4d Rydberg complexes of O2

摘要: The 4s–3d and 5s–4d Rydberg complexes of O2 have been observed by (2+1) resonance‐enhanced multiphoton ionization spectroscopy. All states show sharp rotational structure. Vibrational analysis (and analyses two bands) shows that all are purely in character with no detectable perturbations. Photoelectron spectra the more intense peaks Δv=0 transition to be dominant, but large contributions from Δv≠0 transitions attributed features continuum. relatively weak for bands ascribed excitation a 3dδ Πg state provide method producing nearly pure vibrational preparations (v+=0–3) O+2 ions ground electronic state. Large amounts O+ possible mechanisms formation discussed.