Thermoluminescent glow curve of GdREAlO (RE=Dy or Pr) beta irradiated phosphors.

Phosphors composed of GdREAlO (0≤x ≤ 5 RE = Dy or Pr) stoichiometries were synthesized using the reverse coprecipitation pathway. The thermoluminescent responses of all phosphors were studied under beta radiation exposure. Doping the gadolinium aluminate host improved the thermoluminescent response of the phosphors, with the phosphors composed of GdDyAlO and GdPrAlO being the most sensitive.

Thermoluminescence analysis of beta particle irradiated GdEuAlO phosphors.

The suitable choice of an activator and host combination is essential for synthesizing very sensitive thermoluminescence phosphors. In addition, conspicuous synthesis variables must be optimized to achieve the maximal response. The research presented herein shows that the most recommendable conditions to improve the thermoluminescence response of beta irradiated GdEuAlO phosphors were: x = 0.

Synthesis of lanthanum aluminate by reverse chemical precipitation using pseudoboehmite as alumina precursor.

Lanthanum aluminate was synthesized by using reverse precipitation. A lanthanum nitrate salt in solution allowed the precipitation of lanthanum hydroxide onto the surface of the pseudoboehmite particles. Pseudoboehmite was previously synthesized out of aluminum sulfate which after characterization presents a poor crystallized structure.