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

fYear

2009

fDate

Oct. 24 2009-Nov. 1 2009

Firstpage

1

Lastpage

5

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record (NSS/MIC), 2009 IEEE

Conference_Location

Orlando, FL

ISSN

1095-7863

Print_ISBN

978-1-4244-3961-4

Electronic_ISBN

1095-7863

Type

conf

DOI

10.1109/NSSMIC.2009.5401912

Filename

5401912