Share Email Print
cover

Proceedings Paper

Nanosized grain polycrystalline scintillators for special nuclear materials detection
Author(s): 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
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper 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.

Paper Details

Date Published: 22 September 2007
PDF: 10 pages
Proc. SPIE 6707, Penetrating Radiation Systems and Applications VIII, 67070C (22 September 2007); doi: 10.1117/12.740826
Show Author Affiliations
C. F. Chen, Los Alamos National Lab. (United States)
J. Cooley, Los Alamos National Lab. (United States)
C. Stanek, Los Alamos National Lab. (United States)
D. Byler, Los Alamos National Lab. (United States)
H. Volz, Los Alamos National Lab. (United States)
R. Dickerson, Los Alamos National Lab. (United States)
D. Dombrowski, Los Alamos National Lab. (United States)
T. Tucker, Los Alamos National Lab. (United States)
B. Bartram, Los Alamos National Lab. (United States)
B. Ewing, Los Alamos National Lab. (United States)
M. Mauro, Los Alamos National Lab. (United States)
R. Weinberg, Los Alamos National Lab. (United States)


Published in SPIE Proceedings Vol. 6707:
Penetrating Radiation Systems and Applications VIII
F. Patrick Doty; H. Bradford Barber; Hans Roehrig, Editor(s)

© SPIE. Terms of Use
Back to Top