Fluoride Nanoscintillators
| Autor: | Eduardo G. Yukihara, K. B. Sprinkle, Timothy A. DeVol, John Ballato, Courtney Kucera, Luiz G. Jacobsohn, Steven A. Roberts, Tiffany L. James |
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| Jazyk: | angličtina |
| Rok vydání: | 2011 |
| Předmět: | |
| Zdroj: | Journal of Nanomaterials, Vol 2011 (2011) |
| ISSN: | 1687-4129 1687-4110 |
| Popis: | 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 and241Am 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 ofe-hpairs being considerably larger than the nanoparticles themselves, and suggest that nanoparticles can be used for radiation detection. |
| Databáze: | OpenAIRE |
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