STARK-EFFECT IN BARIUM 6SND 1D2 RYDBERG STATES - EVIDENCE OF STRONG PERTURBATIONS IN THE 1F3 SERIES

摘要: The scalar and tensor polarizabilities of the barium $6snd$ $^{1}D_{2}$ states with principal quantum number $n$ ranging from 14 to 30, as well those $5d7d$ perturber state near $n=26$, have been measured high-resolution laser-atomic-beam spectroscopy. data are analyzed by calculating contribution all known odd-parity connected via electric dipole operator states. In this way contributions unknown $6snf$ $^{1}F_{3}$ inferred. results indicate that series is heavily affected at least two A tentative three-channel quantum-defect---theory analysis series, based on a fit experimental polarizabilities, presented.