CeBr/sub 3/ scintillators for gamma-ray spectroscopy

Author

Shah, Kanai S. ; Glodo, Jaroslaw ; Higgins, William ; Van Loef, Edgar V D ; Moses, William W. ; Derenzo, Stephen E. ; Weber, Marvin J.

Author_Institution

Radiat. Monitoring Devices Inc., Watertown, MA

Volume

7

fYear

2004

fDate

16-22 Oct. 2004

Firstpage

4278

Lastpage

4281

Abstract

In this paper, we report on a new scintillator, cerium bromide (CeBr₃), for gamma-ray spectroscopy. Crystals of this scintillator have been grown using Bridgman process. In CeBr₃, Ce³⁺ is an intrinsic constituent as well as a luminescence center for the scintillation process, has high light output (~68,000 photons/MeV) and fast decay constant (~17 ns). Furthermore, it shows excellent energy resolution for gamma-ray detection. For example, energy resolution of <4% (FWHM) has been achieved using this scintillator for 662 keV photons (¹³⁷Cs source) at room temperature. High timing resolution (>200 ps - FWHM) has been recorded with CeBr₃-PMT (photomultiplier tubes) and BaF₂-PMT detectors operating in coincidence using 511 keV positron annihilation gamma-ray pairs. Potential applications of this material are addressed

Keywords

gamma-ray detection; gamma-ray spectroscopy; photomultipliers; solid scintillation detectors; ¹³⁷Cs source; BaF₂-PMT detectors; Bridgman process; Ce³⁺; CeBr₃ scintillators; CeBr₃-PMT; cerium bromide; energy resolution; fast decay constant; gamma-ray detection; gamma-ray spectroscopy; luminescence center; photomultiplier tubes; positron annihilation gamma-ray pairs; scintillation process; timing resolution; Cerium; Energy resolution; Gamma ray detection; Gamma ray detectors; Luminescence; Photonic crystals; Solid scintillation detectors; Spectroscopy; Temperature; Timing;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record, 2004 IEEE

Conference_Location

Rome

ISSN

1082-3654

Print_ISBN

0-7803-8700-7

Electronic_ISBN

1082-3654

Type

conf

DOI

10.1109/NSSMIC.2004.1466835

Filename

1466835