Title :
Energy transfer mechanism in Gd2(SiO4)O:Ce scintillators
Author :
Suzuki, H. ; Tombrello, T.A. ; Melcher, C.L. ; Schweitzer, J.S.
Author_Institution :
Div. of Phys., Math., & Astron., California Inst. of Technol., Pasadena, CA, USA
fDate :
8/1/1994 12:00:00 AM
Abstract :
The scintillation decay of cerium-doped gadolinium oxyorthosilicate Gd2(SiO4)O:Ce is lengthened by the energy transfer from Gd to Ce. To investigate the role of the Gd in the scintillation processes, the Gd was partially replaced by optically inactive rare earth elements, Y and Lu, and the effective transfer rates from Gd to Ce were measured as a function of Gd and Ce concentrations using UV- and gamma-ray excitations. The data clearly indicate the dilution of the Gd by the Y and the Lu further lengthens the migration time through the Gd in the energy transfer process from Gd to Ce
Keywords :
cerium; gadolinium compounds; gamma-ray effects; luminescence of inorganic solids; scintillation; Gd2(SiO4)O:Ce; Gd2(SiO4)O:Ce scintillators; cerium-doped gadolinium oxyorthosilicate; energy transfer mechanism; energy transfer process; gamma-ray excitations; migration time; optically inactive rare earth elements; scintillation decay; ultraviolet excitations; Charge carrier processes; Energy exchange; Excitons; Ionizing radiation; Luminescence; Resonance; Solid scintillation detectors; Spontaneous emission; Stimulated emission; Temperature;
Journal_Title :
Nuclear Science, IEEE Transactions on
