Nanosized grain polycrystalline scintillators for special nuclear materials detection

C. F. Chen; J. Cooley; C. Stanek; D. Byler; H. Volz; R. Dickerson; D. Dombrowski; T. Tucker; B. Bartram; B. Ewing; M. Mauro; R. Weinberg

doi:10.1117/12.740826

22 September 2007 Nanosized grain polycrystalline scintillators for special nuclear materials detection

C. F. Chen, J. Cooley, C. Stanek, D. Byler, H. Volz, R. Dickerson, D. Dombrowski, T. Tucker, B. Bartram, B. Ewing, M. Mauro, R. Weinberg

Author Affiliations +

Proceedings Volume 6707, Penetrating Radiation Systems and Applications VIII; 67070C (2007) https://doi.org/10.1117/12.740826
Event: Optical Engineering + Applications, 2007, San Diego, California, United States

Abstract

The aim of this work was to explore the limits of polycrystalline ceramic scintillator in countering the nuclear threat. The goal was to develop a polycrystalline LaBr₃:Ce, which can be processed from ceramic forming techniques and can be produced in large size scintillator panels with lower cost and high production rate. Three high purity raw powders were used as the starting materials including LaBr₃, LaCl₃, and CeBr₃. Powder characteristics were measured. A melt spinning method was used to synthesize the nanoparticle LaBr₃:Ce with stoichiometric compositions. The synthesized nanoparticles were characterized and the average particle size of the synthesized nanoparticle LaBr₃:Ce was about 50 nm. The melt spun powders were consolidated using a "Nanosintering" method to achieve a high density while maintaining the stoichiometric composition. The grain size of the sintered polycrystalline is about 50 nm, which shows no grain growth during the densification process.

Citation Download Citation

C. F. Chen, J. Cooley, C. Stanek, D. Byler, H. Volz, R. Dickerson, D. Dombrowski, T. Tucker, B. Bartram, B. Ewing, M. Mauro, and R. Weinberg "Nanosized grain polycrystalline scintillators for special nuclear materials detection", Proc. SPIE 6707, Penetrating Radiation Systems and Applications VIII, 67070C (22 September 2007); https://doi.org/10.1117/12.740826

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