Title of article :
Cerium-doped single crystal and transparent ceramic lutetium aluminum garnet scintillators
Author/Authors :
Cherepy، نويسنده , , Nerine J. and Kuntz، نويسنده , , Joshua D. and Tillotson، نويسنده , , Thomas M. and Speaks، نويسنده , , Derrick T. and Payne، نويسنده , , Stephen A. and Chai، نويسنده , , B.H.T. and Porter-Chapman، نويسنده , , Yetta and Derenzo، نويسنده , , Stephen E.، نويسنده ,
Abstract :
For rapid, unambiguous isotope identification, scintillator detectors providing high-resolution gamma ray spectra are required. We have fabricated Lutetium Aluminum Garnet (LuAG) using transparent ceramic processing, and report a 2-mm thick ceramic exhibiting 75% transmission and light yield comparable to single-crystal LuAG:Ce. The LuAG:Ce luminescence peaks at 550 nm, providing an excellent match for Silicon Photodiode readout. LuAG is dense (6.67 g/cm3) and impervious to water, exhibits good proportionality and a fast decay (∼40 ns), and we measure light yields in excess of 20,000 photons/MeV.
Keywords :
scintillator , transparent ceramic , garnet , Luminescence , Ce3+ , Ce dopant , Optical ceramic , Light yield
Journal title :
Astroparticle Physics
