Open AccessFluoride Nanoscintillators
Author(s) -
Luiz G. Jacobsohn,
Kevin B. Sprinkle,
Steven A. Roberts,
Courtney Kucera,
Tiffany L. James,
E.G. Yukihara,
Timothy A. DeVol,
John Ballato
Publication year - 2010
Publication title -
journal of nanomaterials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.463
H-Index - 66
eISSN - 1687-4129
pISSN - 1687-4110
DOI - 10.1155/2011/523638
Subject(s) - materials science , nanoparticle , scintillation , fluoride , transmission electron microscopy , precipitation , irradiation , diffusion , diffraction , doping , nuclear chemistry , chemical engineering , nanotechnology , inorganic chemistry , optics , optoelectronics , chemistry , physics , engineering , detector , meteorology , nuclear physics , thermodynamics
A preliminary investigation of the scintillation response of rare earth-doped fluoride nanoparticles is reported. Nanoparticles of CaF2 : Eu, BaF2 : Ce, and LaF3 : Eu were produced by precipitation methods using ammonium di-n-octadecyldithiophosphate (ADDP) as a ligand that controls growth and lessens agglomeration. The structure and morphology were characterized by means of X-ray diffraction and transmission electron microscopy, while the scintillation properties of the nanoparticles were determined by means of X-ray and 241Am irradiation. The unique aspect of scintillation of nanoparticles is related to the migration of carriers in the nanoscintillator. Our results showed that even nanoparticles as small as ~4 nm in size effectively scintillate, despite the diffusion length of e-h pairs being considerably larger than the nanoparticles themselves, and suggest that nanoparticles can be used for radiation detection
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