Observation of new high-lying odd levels of U i in a two-color multiphoton ionization spectrum

Abstract

A two-color three-photon ionization technique, using two pulsed dye lasers, was employed to explore the high-lying energy levels of U i. A number of new U i levels in the 34 290–35 120-cm−1 region was observed. Uncertainty in the assignment of J values to some levels known from earlier studies was also reduced or removed.