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New Scintillator Materials (K2CeBr5) and (Cs2CeBr5)Cesium cerium bromide (Cs2CeBr5) and potassium cerium bromide (K2CeBr5) are new scintillator materials for X-ray and gamma ray detector applications. Recently halide scintillator materials, such as Ce doped lanthanum bromide has been proved to be very important material for the same purpose. These materials are highly hygroscopic; a search for high light yield non-hygroscopic materials was highly desirable to advance the scintillator technology. In this paper, we are reporting the crystal growth of novel scintillator materials, cesium cerium bromide (Cs2CeBr5) and potassium cerium bromide (K2CeBr5). Crystals were successfully grown from the melt using the vertical Bridgman-Stockbarger technique, in a comparison with the high performance LaBr3 or LaCl3 crystals, cerium based alkali halides crystals, (Cs2CeBr5) and (K2CeBr5) have similar scintillation properties, while being much less hygroscopic. Furthermore, cesium based compounds will not suffer from the self-activity present in potassium and lanthanum compounds. However the Cs2CeBr5 crystals did not grow properly probably due to non-congruent melting or to some phase transition during cooling. Keywords." Scintillator materials; Ce3+; Energy resolution; Light yield; K2CeBr5
Document ID
20090001149
Acquisition Source
Marshall Space Flight Center
Document Type
Preprint (Draft being sent to journal)
Authors
Hawrami, R.
(Alabama Agricultural and Mechanical Univ. Normal, AL, United States)
Volz, M. P.
(Alabama Agricultural and Mechanical Univ. Normal, AL, United States)
Batra, A. K.
(Alabama Agricultural and Mechanical Univ. Normal, AL, United States)
Aggarwal, M. D.
(Alabama Agricultural and Mechanical Univ. Normal, AL, United States)
Roy, U. N.
(Fisk Univ. Nashville, TN, United States)
Groza, M.
(Fisk Univ. Nashville, TN, United States)
Burger, A.
(Fisk Univ. Nashville, TN, United States)
Cherepy, Nerine
(Lawrence Livermore National Lab. Livermore, CA, United States)
Niedermayr, Thomas
(Lawrence Livermore National Lab. Livermore, CA, United States)
Payne, Stephen A.
(Lawrence Livermore National Lab. Livermore, CA, United States)
Date Acquired
August 24, 2013
Publication Date
January 1, 2008
Subject Category
Physics (General)
Distribution Limits
Public
Copyright
Other

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