SEARCH Articles Figures Tables Excited luminescence Luminescence and other excited states Luminescence and photochemistry excited states Luminescence excitation Optical Excitation of Luminescence and Energy Transfer Silva and V.A. Fassel -ray excited optical luminescence of the rare earths Silva and V.A. Fassel, X-ray excited optical luminescence of the rare earths Silva and VA. Fassel, X-ray excited optical luminescence of the rare earths