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Title: Synthesis and characterization of CaF{sub 2}:Dy nanophosphor for dosimetric application

In this work, nanoparticles (NPs) of dysprosium doped calcium fluoride (CaF{sub 2}:Dy) 1 mol % has been prepared using simple chemical co-precipitation method and its thermoluminescence (TL) dosimetric properties were studied. The synthesized nanoparticle sample was characterized by X-ray diffraction (XRD) and the particle size of face centered cubic phase NPs was found around 30 nm. The shape, morphology and size were also observed by scanning electron microscopy (SEM). From gamma irradiated CaF{sub 2}:Dy TL curves, it was observed that the total areas of all the glow peak intensities are dramatically changed with increase in annealing temperature. Further, TL glow curve of the CaF{sub 2}:Dy at 183 °C annealed at 400 °C, showed very sharp linear response in the dose range from 1 Gy to 750 Gy. This linear response of CaF{sub 2}:Dy nanophosphor as a function of gamma dose is very useful from radiation dosimetric point of view.
Authors:
; ; ;  [1] ;  [2] ;  [3] ;  [4]
  1. Department of Physics, University of Pune, Pune-411007 (India)
  2. Department of Physics, Abasaheb Garware College, Pune-411004 (India)
  3. Radiation Safety Systems Division, Bhabha Atomic Research Centre, Mumbai 400 085 (India)
  4. Radiological Physics and Advisory Division, Bhabha Atomic Research Centre, Mumbai 400 085 (India)
Publication Date:
OSTI Identifier:
22490288
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1665; Journal Issue: 1; Conference: 59. DAE solid state physics symposium 2014, Tamilnadu (India), 16-20 Dec 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 61 RADIATION PROTECTION AND DOSIMETRY; ANNEALING; CALCIUM FLUORIDES; COPRECIPITATION; DIAGRAMS; DOPED MATERIALS; DYSPROSIUM; FCC LATTICES; GLOW CURVE; IRRADIATION; MORPHOLOGY; NANOPARTICLES; PARTICLE SIZE; RADIATION DOSES; SCANNING ELECTRON MICROSCOPY; SYNTHESIS; THERMOLUMINESCENCE; THERMOLUMINESCENT DOSIMETRY; X-RAY DIFFRACTION