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Proceedings Paper

Barium iodide single-crystal scintillator detectors
Author(s): Nerine J. Cherepy; Giulia Hull; Thomas R. Niedermayr; Alexander Drobshoff; Stephen A. Payne; Utpal N. Roy; Yunlong Cui; Ajanta Bhattacharaya; Melissa Harrison; Mingsheng Guo; Michael Groza; Arnold Burger
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Paper Abstract

We find that the high-Z crystal Barium Iodide is readily growable by the Bridgman growth technique and is less prone to crack compared to Lanthanum Halides. We have grown Barium Iodide crystals: undoped, doped with Ce3+, and doped with Eu2+. Radioluminescence spectra and time-resolved decay were measured. BaI2(Eu) exhibits luminescence from both Eu2+ at 420 nm (~450 ns decay), and a broad band at 550 nm (~3 μs decay) that we assign to a trapped exciton. The 550 nm luminescence decreases relative to the Eu2+ luminescence when the Barium Iodide is zone refined prior to crystal growth. We also describe the performance of BaI2(Eu) crystals in experimental scintillator detectors.

Paper Details

Date Published: 24 September 2007
PDF: 7 pages
Proc. SPIE 6706, Hard X-Ray and Gamma-Ray Detector Physics IX, 670616 (24 September 2007); doi: 10.1117/12.738973
Show Author Affiliations
Nerine J. Cherepy, Lawrence Livermore National Lab. (United States)
Giulia Hull, Lawrence Livermore National Lab. (United States)
Thomas R. Niedermayr, Lawrence Livermore National Lab. (United States)
Alexander Drobshoff, Lawrence Livermore National Lab. (United States)
Stephen A. Payne, Lawrence Livermore National Lab. (United States)
Utpal N. Roy, Fisk Univ. (United States)
Yunlong Cui, Fisk Univ. (United States)
Ajanta Bhattacharaya, Fisk Univ. (United States)
Melissa Harrison, Fisk Univ. (United States)
Mingsheng Guo, Fisk Univ. (United States)
Michael Groza, Fisk Univ. (United States)
Arnold Burger, Fisk Univ. (United States)


Published in SPIE Proceedings Vol. 6706:
Hard X-Ray and Gamma-Ray Detector Physics IX
Ralph B. James; Arnold Burger; Larry A. Franks, Editor(s)

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