Title :
Luminescence centers in calcium co-doped LSO:Ce single crystals
Author :
Yang, Kan ; Melcher, Charles L. ; Zhuravleva, Mariya
Author_Institution :
Dept. of Mater. Sci. & Eng., Univ. of Tennessee, Knoxville, TN, USA
fDate :
Oct. 24 2009-Nov. 1 2009
Abstract :
Experimental studies of LSO:Ce crystals co-doped with various concentrations of Ca are presented. Photoluminescence decay time, excitation and emission spectra, thermal response and X-ray radioluminescence are investigated as a function of Ca concentration. Experimental data show Ca co-doping does not alter the energy level structure of either Ce1 or Ce2, but reduces the relative population of Ce2 to Ce1. Thus, the luminescence from Ce2 is suppressed, which contributes to the fast scintillation decay of Ca co-doped LSO:Ce.
Keywords :
calcium; cerium; doping profiles; impurity states; lutetium compounds; photoluminescence; scintillation; Lu2SiO5:Ce,Ca; X-ray radioluminescence; calcium co-doped single crystals; cerium doped lutetium oxyorthosilicate; emission spectra; excitation; luminescence centers; photoluminescence decay time; scintillation decay; thermal response; Calcium; Cerium; Crystalline materials; Crystals; Energy states; Helium; Luminescence; Nuclear and plasma sciences; Photoluminescence; Temperature distribution; LSO; cerium; co-doping; scintillator;
Conference_Titel :
Nuclear Science Symposium Conference Record (NSS/MIC), 2009 IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4244-3961-4
Electronic_ISBN :
1095-7863
DOI :
10.1109/NSSMIC.2009.5401912
