Scintillation of rare earth doped fluoride nanoparticles

Journal Article · Mon Sep 12 00:00:00 EDT 2011 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.3638484· OSTI ID:22027741

Jacobsohn, L G; McPherson, C L; Sprinkle, K B; Ballato, J ^[1]; Yukihara, E G ^[2]; DeVol, T A ^[3]

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1. Center for Optical Materials Science and Engineering Technologies (COMSET), and School of Materials Science and Engineering, Clemson University, Clemson, South Carolina 29634 (United States)
2. Physics Department, Oklahoma State University, Stillwater, Oklahoma 74078-3072 (United States)
3. Department of Environmental Engineering and Earth Sciences, Clemson University, Clemson, South Carolina 29634-0905 (United States)

The scintillation response of rare earth (RE) doped core/undoped (multi-)shell fluoride nanoparticles was investigated under x-ray and alpha particle irradiation. A significant enhancement of the scintillation response was observed with increasing shells due: (i) to the passivation of surface quenching defects together with the activation of the REs on the surface of the core nanoparticle after the growth of a shell, and (ii) to the increase of the volume of the nanoparticles. These results are expected to reflect a general aspect of the scintillation process in nanoparticles, and to impact radiation sensing technologies that make use of nanoparticles.

• OSTI ID: 22027741
• Journal Information: Applied Physics Letters, Vol. 99, Issue 11; Other Information: (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
36 MATERIALS SCIENCE
77 NANOSCIENCE AND NANOTECHNOLOGY
ALPHA PARTICLES
BARIUM COMPOUNDS
CALCIUM COMPOUNDS
CERIUM
CRYSTAL GROWTH
DOPED MATERIALS
EUROPIUM
FLUORIDES
IRRADIATION
LANTHANUM COMPOUNDS
NANOSTRUCTURES
PARTICLES
PASSIVATION
PHYSICAL RADIATION EFFECTS
QUENCHING
SCINTILLATIONS
SURFACES
X RADIATION