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Proceedings Paper

Thermal neutron detectors based on gadolinium-containing lanthanide-halide nanoscintillators
Author(s): John B. Plumley; Nathan J. Withers; Antonio C. Rivera; Brian A. Akins; José M. Vargas; Kenneth Carpenter; Gennady A. Smolyakov; Robert D. Busch; Marek Osiński
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Paper Abstract

A novel concept for detection of thermal neutrons based on lanthanide halide nanocrystals containing gadolinium, an element with by far the highest thermal neutron capture cross section among all stable isotopes, is presented. Colloidal synthesis of GdF3 nanocrystals, GdF3 nanocrystals doped with Ce, and LaF3 nanocrystals doped with Gd is reported. The nanocrystals were characterized by transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDS), dynamic light scattering (DLS) analysis, and steady state UV-VIS optical absorption and photoluminescence spectroscopy. Neutron detection has been confirmed in experiments with Gd-containing nanocrystalline material irradiated with 252Cf neutron source.

Paper Details

Date Published: 5 May 2010
PDF: 13 pages
Proc. SPIE 7665, Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XI, 76651F (5 May 2010); doi: 10.1117/12.854903
Show Author Affiliations
John B. Plumley, Ctr. for High Technology Materials, The Univ. of New Mexico (United States)
Nathan J. Withers, Ctr. for High Technology Materials, The Univ. of New Mexico (United States)
Antonio C. Rivera, Ctr. for High Technology Materials, The Univ. of New Mexico (United States)
Brian A. Akins, Ctr. for High Technology Materials, The Univ. of New Mexico (United States)
José M. Vargas, Ctr. for High Technology Materials, The Univ. of New Mexico (United States)
Kenneth Carpenter, The Univ. of New Mexico (United States)
Gennady A. Smolyakov, Ctr. for High Technology Materials, The Univ. of New Mexico (United States)
Robert D. Busch, The Univ. of New Mexico (United States)
Marek Osiński, Ctr. for High Technology Materials, The Univ. of New Mexico (United States)


Published in SPIE Proceedings Vol. 7665:
Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XI
Augustus Way Fountain; Patrick J. Gardner, Editor(s)

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