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

Journal Article · Wed Jun 24 00:00:00 EDT 2015 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4917754· OSTI ID:22490288

Bhadane, Mahesh S.; Dahiwale, S. S.; Bhoraskar, V. N.; Patil, B. J. ^[1]; Kulkarni, M. S. ^[2]; Bhatt, B. C. ^[3]

---

1. Department of Physics, Abasaheb Garware College, Pune-411004 (India)
2. Radiation Safety Systems Division, Bhabha Atomic Research Centre, Mumbai 400 085 (India)
3. Radiological Physics and Advisory Division, Bhabha Atomic Research Centre, Mumbai 400 085 (India)

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.

• OSTI ID: 22490288
• Journal Information: AIP Conference Proceedings, Vol. 1665, 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); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

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