Lanthanide-halide-based nanoscintillators for portable radiological detectors

Marek Osiński; John B. Plumley; Nathan J. Withers; Antonio C. Rivera; Brian A. Akins; Krishnaprasad Sankar; Gennady A. Smolyakov

doi:10.1117/12.819018

12 May 2009 Lanthanide-halide-based nanoscintillators for portable radiological detectors

Marek Osiński, John B. Plumley, Nathan J. Withers, Antonio C. Rivera, Brian A. Akins, Krishnaprasad Sankar, Gennady A. Smolyakov

Author Affiliations +

Proceedings Volume 7306, Optics and Photonics in Global Homeland Security V and Biometric Technology for Human Identification VI; 730617 (2009) https://doi.org/10.1117/12.819018
Event: SPIE Defense, Security, and Sensing, 2009, Orlando, Florida, United States

Abstract

Colloidal synthesis of core/shell nanocrystals with cerium-doped lanthanum fluoride core and undoped lanthanum fluoride shell, and of core/shell nanocrystals with hygroscopic cerium-doped lanthanum bromide core and undoped lanthanum fluoride shell is reported. The nanocrystals were characterized by transmission electron microscopy (TEM), energy dispersive X-ray spectroscopy (EDS), dynamic light scattering (DLS) analysis, steady state UV-VIS optical absorption and photoluminescence spectroscopy, and by photoluminescence lifetime measurements. Scintillation tests were performed on the cerium-doped lanthanum fluoride nanocrystalline material exposed to low-level gamma irradiation.

Citation Download Citation

Marek Osiński, John B. Plumley, Nathan J. Withers, Antonio C. Rivera, Brian A. Akins, Krishnaprasad Sankar, and Gennady A. Smolyakov "Lanthanide-halide-based nanoscintillators for portable radiological detectors", Proc. SPIE 7306, Optics and Photonics in Global Homeland Security V and Biometric Technology for Human Identification VI, 730617 (12 May 2009); https://doi.org/10.1117/12.819018

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