SEARCH Articles Figures Tables Aqueous rare-earth ions Divalent rare earth ions Emission of rare earth ions Energy Transfer Between Two Rare Earth Ions Energy transfer between organic ligands and rare earth ions Fong Nonradiative processes of rare-earth ions in crystals Hydration shell rare earth ions Laser ions divalent rare earths Laser ions trivalent rare earths Nephelauxetic effect rare earth ions Nonradiative Transitions in Rare Earth Ions The Energy-Gap Law Nonradiative processes of rare-earth ions in crystals Rare Earth Ions (Band Emission) Rare Earth Ions (Line Emission) Rare earth ions Reflectance Rare earth ions, electron spin resonance Rare earth ions, sensitized fluorescence Separation of rare earths by ion exchange The Free-Ion Approach to Rare Earth The Rare Earth Ions The absorption and fluorescence spectra of rare earth ions in solution The absorption andfluorescence spectra of rare earth ions in solution Trivalent Rare Earth Ions The Dieke Diagram Trivalent rare earth ions