Influence of thermal treatment and γ-radiation on absorption, luminescence and scintillation properties of Lu3Al5O12:Ce single crystalline films

Abstract: The influence of thermal treatment (TT) and irradiation by -quanta (60Co, 1.25MeV) in the range of absorbed doses on the absorption, luminescence and light yield (LY) of scintillators based on (LuAG:Ce) single crystalline films (SCF) grown by LPE from the Pb-based flux is studied. It has been shown that transformation of the and valent states of iron and lead trace impurities cause the change in the optical absorption of SCF induced by the TT in air and vacuum in the range of annealing temperatures of . Possible types of radiation defects in LuAG:Ce SCF induced by -radiation are analyzed. [Copyright &y& Elsevier]