Scintillation properties of K2LaBr5:Ce3+ crystals for gamma-ray spectroscopy

Utpal N. Roy; Kunle Adio; Michael Groza; Yunlong Cui; Arnold Burger

doi:10.1117/12.619560

31 August 2005 Scintillation properties of K₂LaBr₅:Ce³⁺ crystals for gamma-ray spectroscopy

Utpal N. Roy, Kunle Adio, Michael Groza, Yunlong Cui, Arnold Burger

Proceedings Volume 5922, Hard X-Ray and Gamma-Ray Detector Physics VII; 592206 (2005) https://doi.org/10.1117/12.619560
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

In this paper, we report on the growth of a relatively new scintillator from the crystal K₂LaX₅ family (X=Cl, Br, I), K₂LaBr₅:Ce³⁺, and its scintillation properties for γ-ray spectroscopy. The material was synthesized by reacting stoichiometric amounts of LaBr₃ and KBr. Prior to synthesis, the material was heated under dynamic vacuum to remove water molecule from the starting material. The synthesized material was then mixed with 10 mol % CeBr₃, subsequently sealed in an evacuated quartz ampule. The crystals were grown by vertical Bridgman growth technique. An energy resolution of ~ 5% (FWHM) for the 662 KeV gamma ray was obtained with an encapsulated K₂LaBr₅:Ce³⁺ scintillator. The light yield non-proportionality achieved versus the energy range of 31 KeV to 1333 KeV was about 3%.

Citation Download Citation

Utpal N. Roy, Kunle Adio, Michael Groza, Yunlong Cui, and Arnold Burger "Scintillation properties of K₂LaBr₅:Ce³⁺ crystals for gamma-ray spectroscopy", Proc. SPIE 5922, Hard X-Ray and Gamma-Ray Detector Physics VII, 592206 (31 August 2005); https://doi.org/10.1117/12.619560

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