Abstract

The ground state of Hafnium is 5d²6s^{2 3}F₂ and that of Hf II is 5d6s^{2 2}D_3/2. This indicates that the electronic configuration of the excited states cannot be described with two-electron system. Resonance ionization spectroscopy has the advantage of the capability to investigate highly excited states through the specific intermediate state. Reference[1] observed Rydberg series converging to the excited states of Hf II and determined the first ionization potential of Hf as 55047.9cm^–1 [1]. Because of the electronic configuration, the series converging to the frist ionization limit were not expected. We report that we performed two color resonance ionization spectroscopy of Hf atoms and the Rydberg series converging to the ground state of Hf II were identified.

© 2000 IEEE