Radiation detector employing solid state scintillator material and preparation methods therefor

摘要: A polycrystalline ceramic scintillator exhibiting reduced afterglow includes between about 5 and 50 mole percent Gd₂ O₃ , 0.02 l2 of either Eu₂ or Nd₂ as a rare earth activator oxide, 0.003 0.5 Pr₂ Tb₂ an reducer. The remainder the composition is Y₂ . resulting especially useful for radiation detector type having plurality radiationreceiving channels (14). body disposed in each channel so that being received therein incident on causes to convert light energy predetermined wavelenth. also means converting from into electrical signals (18) which are proportional amount body. Methods preparing present invention include sintering, sintering combined with gas hot isostatic pressing, vacuum pressing.