Title :
Scintillation of nanoparticles: Case study of rare earth doped fluorides
Author :
Jacobsohn, L.G. ; Kucera, C.J. ; Sprinkle, K.B. ; Roberts, S.A. ; Yukihara, E.G. ; DeVol, T.A. ; Ballato, J.
Author_Institution :
Center for Opt. Mater. Sci. & Eng. Technol. (COMSET), Clemson Univ., Clemson, SC, USA
fDate :
Oct. 30 2010-Nov. 6 2010
Abstract :
An investigation of the scintillation response of rare earth doped fluoride nanoparticles was carried out taking advantage of core/multi-shell structures. A significant enhancement of the scintillation response was observed and attributed to the increase of the volume of the nanoparticles. Larger nanoparticles contain larger fractions of the irradiation cascade, their dimensions approach the electron-hole mean recombination length increasing the probability of radiative recombination, and separates the luminescence centers in the core from quenching defects on the surface of the nanoparticles.
Keywords :
electron-hole recombination; nanoparticles; scintillation; electron-hole mean recombination length; irradiation cascade; luminescence center; nanoparticle scintillation; radiative recombination; rare earth doped fluorides; Charge carrier processes; Luminescence; Materials; Nanoparticles; Radiation effects; Radiative recombination; Sea measurements;
Conference_Titel :
Nuclear Science Symposium Conference Record (NSS/MIC), 2010 IEEE
Conference_Location :
Knoxville, TN
Print_ISBN :
978-1-4244-9106-3
DOI :
10.1109/NSSMIC.2010.5874045
