LaF3:Ce nanocomposite scintillator for gamma-ray detection

E. A. McKigney; R. E. Muenchausen; D. W. Cooke; R. E. Del Sesto; R. D. Gilbertson; M. K. Bacrania; B. L. Bennett; L. G. Jacobsohn; T. M. McCleskey; K. C. Ott; S. C. Sitarz; J. F. Smith; S. Stange

doi:10.1117/12.737364

24 September 2007 LaF₃:Ce nanocomposite scintillator for gamma-ray detection

E. A. McKigney, R. E. Muenchausen, D. W. Cooke, R. E. Del Sesto, R. D. Gilbertson, M. K. Bacrania, B. L. Bennett, L. G. Jacobsohn, T. M. McCleskey, K. C. Ott, S. C. Sitarz, J. F. Smith, S. Stange

Author Affiliations +

Proceedings Volume 6706, Hard X-Ray and Gamma-Ray Detector Physics IX; 67061A (2007) https://doi.org/10.1117/12.737364
Event: Optical Engineering + Applications, 2007, San Diego, California, United States

Abstract

Nanophosphor LaF₃:Ce has been synthesized and incorporated into a matrix to form a nanocomposite scintillator suitable for application to γ-ray detection. Owing to the small nanocrystallite size (sub-10 nm), optical emission from the γ / nanophosphor interaction is only weakly Rayleigh scattered (optical attenuation length exceeds 1 cm for 5-nm crystallites), thus yielding a transparent scintillator. The measured energy resolution is ca. 16% for ¹³⁷Cs γ rays, which may be improved by utilizing brighter nanophosphors. Synthesis of the nanophosphor is achieved via a solution-precipitation method that is inexpensive, amenable to routine processing, and readily scalable to large volumes. These results demonstrate nanocomposite scintillator proof-of- principle and provide a framework for further research in this nascent field of scintillator research.

Citation Download Citation

E. A. McKigney, R. E. Muenchausen, D. W. Cooke, R. E. Del Sesto, R. D. Gilbertson, M. K. Bacrania, B. L. Bennett, L. G. Jacobsohn, T. M. McCleskey, K. C. Ott, S. C. Sitarz, J. F. Smith, and S. Stange "LaF₃:Ce nanocomposite scintillator for gamma-ray detection", Proc. SPIE 6706, Hard X-Ray and Gamma-Ray Detector Physics IX, 67061A (24 September 2007); https://doi.org/10.1117/12.737364

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