Abstract

A double origin of UV emissions in the thermostimulated luminescence (TSL) of CaSO4: DY is discussed: Tm traces and/or lattice emission (SO4 groups). Two types of crystals are compared: a commercial dosimetric powder and our synthesized samples. The effects of the Dy concentration and the Dy/Tm codoping are studied. Une double origine des émissions UV observées dans la luminescence thermostimulée (TSL) du CaSO4: Dy est discutée: présence de Tm et/ou émission de réseau (groupements SO4). Un produit commercial dosimétrique est comparé avec des produits que nous avons synthétisés. Les effets de la concentration de Dy et d'un codopage Dy/Tm ont été analysés.

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