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Proceedings Paper

LaF3:Ce nanocomposite scintillator for gamma-ray detection
Author(s): 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
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Paper 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.

Paper Details

Date Published: 24 September 2007
PDF: 11 pages
Proc. SPIE 6706, Hard X-Ray and Gamma-Ray Detector Physics IX, 67061A (24 September 2007); doi: 10.1117/12.737364
Show Author Affiliations
E. A. McKigney, Los Alamos National Lab. (United States)
R. E. Muenchausen, Los Alamos National Lab. (United States)
D. W. Cooke, Los Alamos National Lab. (United States)
R. E. Del Sesto, Los Alamos National Lab. (United States)
R. D. Gilbertson, Los Alamos National Lab. (United States)
M. K. Bacrania, Los Alamos National Lab. (United States)
B. L. Bennett, Los Alamos National Lab. (United States)
L. G. Jacobsohn, Los Alamos National Lab. (United States)
T. M. McCleskey, Los Alamos National Lab. (United States)
K. C. Ott, Los Alamos National Lab. (United States)
S. C. Sitarz, Los Alamos National Lab. (United States)
J. F. Smith, Los Alamos National Lab. (United States)
S. Stange, Los Alamos National Lab. (United States)


Published in SPIE Proceedings Vol. 6706:
Hard X-Ray and Gamma-Ray Detector Physics IX
Ralph B. James; Arnold Burger; Larry A. Franks, Editor(s)

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