Codoping tool for extrinsic and intrinsic charge trapping centers suppression in oxide scintillators

Abstract
Scintillating materials as important class of functional materials are widely used for detection of X- and gamma-rays in many fields such as medical imaging, high energy physics, industrial control, safety and homeland security. High light yield and good timing resolution are the most important parameters of a scintillator. Both are crucially dependent on charge transfer and trapping in a material. Within the project, these phenomena will be addressed at atomistic level in high performance Y/Lu garnets and silicates activated by Ce or Pr and codoped with optically inactive ions which, as found empirically, markedly improve scintillation characteristics. Conventional and time-resolved pulse EPR, NMR, luminescence and TSL with ab initio modeling will be used for this purpose. The combination of the experimental techniques with theoretical modeling will provide deeper understanding of the mechanisms of the energy transfer and storage processes in these scintillation materials and will allow optimization of their main scintillation characteristics towards intrinsic limits.