Advances in the synthesis of new Europium doped CaSO4 phosphors and their thermoluminescence characterization

作者：Bernal R^*; Garcia Haro A R; Machi L; Brown F; Perez Salas R; Castano V M; Cruz Vazquez C

来源：Radiation Measurements, 2008, 43(2-6): 371-374.

DOI：10.1016/j.radmeas.2007.11.027

• thermoluminescence
• CaSO4
• beta radiation

Novel self-agglomerating Eu doped CaSO4 phosphors were synthesized by a cheap, easy, and environmental friendly chemical route. Pellet-shaped sintered samples were obtained without any binding material, and exposed to beta particle irradiation. The thermoluminescence (TL) response in the 0.08-2.6 Gy dose range increased linearly as the radiation dose increased. Glow curves exhibit the most intense maximum close to 200 degrees C, and two much less intense maxima at 250 and 330 degrees C when a 5 degrees C/s heating rate is used. No TL peaks shift is observed when dose changes, which is characteristic of first order kinetics TL processes. The whole glow curve displays a remarkable stability under Storage at room temperature. The main peak intensity is 2.5 times greater than that of the TLD-100. The method here reported can be used to synthesize CaSO4 with other dopants.

• 出版日期2008-6