Transparent oxyhalide glass and glass ceramics for gamma-ray detection

Chenlu Han; Meredith Barta; Max Dorn; Jason Nadler; Robert Rosson; Brent Wagner; Bernd Kahn; Zhitao Kang

doi:10.1117/12.899353

27 September 2011 Transparent oxyhalide glass and glass ceramics for gamma-ray detection

Chenlu Han, Meredith Barta, Max Dorn, Jason Nadler, Robert Rosson, Brent Wagner, Bernd Kahn, Zhitao Kang

Proceedings Volume 8142, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XIII; 81420R (2011) https://doi.org/10.1117/12.899353
Event: SPIE Optical Engineering + Applications, 2011, San Diego, California, United States

Abstract

Nuclear radiation detection is continuously becoming more important for today's society. Conventional scintillator based gamma-ray detectors use single crystal materials such as NaI:Tl, LaBr₃:Ce, which provide excellent radiation detection properties, but suffer from their environment-related fluctuation, high cost and size limitation. The incorporation of nanophosphors or quantum dots (QD) into a transparent host matrix has been studied recently as a cost-saving alternative that may solve the scalability and stability problems while still providing considerable optical performance. In this work, a new glass based detecting material with promising gamma-ray detection performance is reported. Transparent alumino-silicate glasses containing cerium-doped gadolinium halide nanocrystals were prepared by a melt-quench method followed by annealing to form nanocrystal precipitates. Samples were cast and polished for optical and radiation characterization. The preliminary results indicated a similar gamma-ray detection efficiency compared to a conventional NaI:Tl detector and a gamma-ray peak resolution of ~27% at 662 KeV from some of these samples. By controlling elemental composition and ratio of the in-situ precipitated nanoparticles, radiation detection performance is expected to be improved.

Citation Download Citation

Chenlu Han, Meredith Barta, Max Dorn, Jason Nadler, Robert Rosson, Brent Wagner, Bernd Kahn, and Zhitao Kang "Transparent oxyhalide glass and glass ceramics for gamma-ray detection", Proc. SPIE 8142, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XIII, 81420R (27 September 2011); https://doi.org/10.1117/12.899353

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