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Öğe Room and Low Temperature Luminescence Properties of CaSO4:Dy,Tm Codoped with Li(ELSEVIER SCIENCE BV, 2009) Can, N.; Karali, T.; Wang, Y.; Townsend, P. D.; Prokic, M.; Canimoglu, A.; Boulon, G; Dujardin, C; Jurdyc, AMRare earths, especially Dy or Tm doped CaSO4 phosphors are actively studied. They have high sensitivity, a large dynamic range, thermal stability and ease of preparation. Nevertheless, they can be enhanced by inclusion of lithium and this study reports some effects of lithium co-dopant on the TL and radioluminescence (RL) emissions of two TL phosphors. Addition of Li as a co-dopant ion was made either during chemical preparation of the phosphors, or as a binder component mixed with the basic phosphors matrix during the process of pressing and sintering the TLD pellets.