Resonance ionization laser ion source has become an essential tool for the production of isobarically pure radioactive ion beams for nuclear research . Efficient resonant ionization of beams of atomic tellurium using a combination of Ti:Sapphire and dye lasers has been recently reported . Development of suitable ionization schemes is important for the laser ion sources equipped with all Ti:Sapphire lasers. We have conducted photoionization studies of tellurium in a hot-cavity laser ion source with three Ti:Sapphire lasers. In the ion source Te atoms are resonantly excited by two lasers from the ground state to an excited state and then ionized by the third laser. Photoionization spectra are obtained by scanning the third laser wavelength. A number of autoionizing states and a series of autoionizing Rydberg states have been observed, some of which could lead to efficient three-step resonant ionization of Te.
*This material is based upon work supported by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics. This research used resources of the Holifield Radioactive Ion Beam Facility of Oak Ridge National Laboratory, which was a DOE Office of Science User Facility.
. V. N. Fedosseev, Yu Kudryavtsev, V. I. Mishin, Phys. Scr. 85 (2012) 058104.
. T. Day Goodacre, et. al., Hyperfine Interact (2017) 238:41.