Barium iodide single-crystal scintillator detectors

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

doi:10.1117/12.738973

24 September 2007 Barium iodide single-crystal scintillator detectors

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

Author Affiliations +

Proceedings Volume 6706, Hard X-Ray and Gamma-Ray Detector Physics IX; 670616 (2007) https://doi.org/10.1117/12.738973
Event: Optical Engineering + Applications, 2007, San Diego, California, United States

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.

Citation Download Citation

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, and Arnold Burger "Barium iodide single-crystal scintillator detectors", Proc. SPIE 6706, Hard X-Ray and Gamma-Ray Detector Physics IX, 670616 (24 September 2007); https://doi.org/10.1117/12.738973

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