Effect of Ca Co-Doping on the Luminescence Centers in LSO:Ce Single Crystals

Author

Yang, Kan ; Melcher, Charles L. ; Koschan, Merry A. ; Zhuravleva, Mariya

Author_Institution

Dept. of Mater. Sci. & Eng., Univ. of Tennessee, Knoxville, TN, USA

Volume

58

Issue

3

fYear

2011

fDate

6/1/2011 12:00:00 AM

Firstpage

1394

Lastpage

1399

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 excited luminescence 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

X-ray detection; X-ray emission spectra; photoluminescence; solid scintillation detectors; Ca codoping effect; Lu₂SiO:Ce,Ca; X-ray excited luminescence; emission spectra; energy level structure; luminescence center; photoluminescence decay time; scintillation decay time; thermal response; Crystals; Energy states; Photoluminescence; Temperature measurement; Thermal quenching; Three dimensional displays; Calcium; Co-doping; LSO; cerium; scintillator;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/TNS.2011.2119379

Filename

5740393