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Proceedings Paper

New scintillator compositions
Author(s): W. M. Higgins; E. Van Loef; J. Glodo; A. Churilov; K. S. Shah
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Paper Abstract

Single crystals of LaBr3:1% Pr and CeBr3:1% Pr have been grown by the vertical Bridgman technique. Crystals of these scintillators can be used in the fabrication of gamma-ray spectrometers. The LaBr3:1% Pr and CeBr3:1% Pr crystals we have grown had light outputs of ~73,000 and ~50,000 photons/MeV, respectively, and principal decay constants of 11μs and 26 ns, respectively. There were a number of emission peaks observed for these compounds. The emission wavelength range for the LaBr3:1% Pr and CeBr3:1% Pr scintillators were from about 400 to 800 nm. The CeBr3:1% Pr scintillator had a dominating emission peak due to CeBr3 at 390 nm. These two materials had energy resolutions of 9 and 7% FWHM, respectively, for 662 keV photons at room temperature. In this paper, we will report on our results to date for vertical Bridgman crystal growth and characterization of Pr-doped LaBr3 and Pr-doped CeBr3 crystals. We will also describe the special handling and processing procedures developed for these scintillator compositions.

Paper Details

Date Published: 18 October 2007
PDF: 11 pages
Proc. SPIE 6707, Penetrating Radiation Systems and Applications VIII, 670704 (18 October 2007); doi: 10.1117/12.740834
Show Author Affiliations
W. M. Higgins, Radiation Monitoring Devices, Inc. (United States)
E. Van Loef, Radiation Monitoring Devices, Inc. (United States)
J. Glodo, Radiation Monitoring Devices, Inc. (United States)
A. Churilov, Radiation Monitoring Devices, Inc. (United States)
K. S. Shah, Radiation Monitoring Devices, Inc. (United States)


Published in SPIE Proceedings Vol. 6707:
Penetrating Radiation Systems and Applications VIII
F. Patrick Doty; H. Bradford Barber; Hans Roehrig, Editor(s)

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