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Title: Thermoluminescence response of K{sub 2}Ca{sub 2}(SO{sub 4}){sub 3} nanophosphor Co-doped with Eu and Ce for gamma ray dosimetry

K{sub 2}Ca{sub 2}(SO{sub 4}){sub 3} nanophosphors co-doped with Eu and Ce were synthesized by the chemical co-precipitation method. These samples were further annealed at 700 °C structural reformation. The structural and morphological characteristics were studied using XRD and TEM techniques. The particle size calculated from XRD spectra was around 35 nm. The as synthesized sample shows cubic structure annealed at 700 °C. The as synthesized and annealed sample of K{sub 2}Ca{sub 2}(SO{sub 4}){sub 3}: EuCe were irradiated with Co{sup 60} gamma rays for the doses from 2Gy to 1kGy. The TL characteristic sample of co-doped were studied for the dosimetric application by gamma radiation. The TL spectrum of annealed sample has single peaked at 160 °C. The Eu doped sample has a high TL sensitivity than Ce doped sample. But after co-doping with Eu and Ce, TL intensity observed to be decreased. The decrees in TL peak intensity of the phosphor on co-doping of Eu and Ce gives an insight into the emission mechanism of the phosphor which involves energy transfer from Eu to Ce. The TL response of all the samples were found to be linear for the dose from 2 Gy to 1 KGy. Therefore, K{sub 2}Ca{sub 2}(SO{sub 4}){sub 3}:more » EuCe nanophosphor can be used for the measurement of high dose of gamma radiation.« less
Authors:
 [1] ; ; ; ;  [2] ;  [3] ;  [4] ;  [5]
  1. Dept. of Physics, Abasaheb Garware College, Pune-411004 (India)
  2. Department of Physics, University of Pune, Pune 411007 (India)
  3. Dept. of Physics, Fergusson College, Pune-411004 (India)
  4. Radiation Safety Systems Division, Bhabha Atomic Research Centre, Mumbai 400 085 (India)
  5. Radiological Physics and Advisory Division, Bhabha Atomic Research Centre, Mumbai 400 085 (India)
Publication Date:
OSTI Identifier:
22490285
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; CERIUM; COBALT 60; COPRECIPITATION; DOPED MATERIALS; ENERGY TRANSFER; EUROPIUM; GAMMA RADIATION; GLOW CURVE; IRRADIATION; PARTICLE SIZE; SENSITIVITY; SULFATES; THERMOLUMINESCENCE; THERMOLUMINESCENT DOSIMETRY; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION