Spectroscopy of divalent rare earth ions in fluoride crystals
arXiv:1506.03411 · doi:10.1016/j.jlumin.2015.06.055
Abstract
We have studied the absorption spectra of x-ray irradiation-induced Ce2+ and Pr2+ ions in crystals of alkaline-earth fluorides. We have calculated absorption spectra of divalent praseodymium ions in SrF2 crystals doped with Pr2+ for the first time. The calculated spectra agree rather well with the experimental data. In crystals containing induced Ce2+ ions we have found strong electron-phonon coupling. In BaF2, we do not observe bands corresponded to divalent Ce or Pr ions.
14 pages, 5 figures, 1 table