Synthesis and dosimetric properties of the novel thermoluminescent CaF2:Tm nanoparticles |
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| Authors: | M Zahedifar E Sadeghi |
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| Institution: | 1. Physics Department, University of Kashan, Kashan, Islamic Republic of Iran;2. Institute of Nanoscience and Nanotechnology, University of Kashan, Kashan, Islamic Republic of Iran;1. Department of Nuclear Engineering and Radiological Sciences, University of Michigan, 2355 Bonisteel Blvd., Ann Arbor, MI 49109-2104, USA;2. West Physics, 3825 Paces Walk SE, Suite 250, Atlanta, GA 30339, USA;3. Department of Physics, University of Azad Jammu and Kashmir, Muzaffarabad 13100, Azad Kashmir, Pakistan;1. CIEMAT. Av. Complutense 40, 28040, Madrid, Spain;2. MNCN-CSIC. C/ J. Gutiérrez Abascal 2, 28006, Madrid, Spain;1. Turkish Atomic Energy Authority, Sarayköy Nuclear Research and Training Centre, 06983 Saray-Kazan, Ankara, Turkey;2. Department of Electrical and Electronics Engineering, Bilkent University, Ankara, Turkey;1. Universidade Federal de Sergipe, Departamento de Física, Av. Marechal Rondon, s/n, 49100-00, São Cristóvão, SE, Brazil;2. Instituto de Pesquisas Energéticas e Nucleares, Comissão Nacional de Energia Nuclear, IPEN/CNEN-SP, Av. Prof. Lineu Prestes 2242, 05508-000, São Paulo, SP, Brazil;1. Physics Department, University of Kashan, Kashan, I.R. Iran;2. Institute of Nanoscience and Nanotechniology, University of Kashan, Kashan, I.R. Iran;3. Research Center and Department of Medical Physics, School of Medicine, Mashhad University of Medical Sciences, Vakil Abad Blvd., Mashhad, Iran |
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| Abstract: | Calcium fluoride nanoparticles doped with thulium were synthesized for the first time by using the hydrothermal method. The synthesized nanostructures were characterized by X-ray diffraction (XRD) and energy dispersive spectrometer (EDS). The crystallite size of about 40 nm was estimated by Scherer's formula. The shape and size of the nanoparticles were also observed by scanning electron microscope (SEM). Tm–Tstop method and computerized glow curve deconvolution (CGCD) technique were employed to obtain the number of component glow peaks and kinetic parameters of the produced phosphor. Three overlapped thermoluminescence glow peaks were identified at 402, 426 and 467 K in the complex glow curve of this phosphor. The optimized concentration of Tm impurity was obtained at 0.5 mol%. Other thermoluminescence characteristics of this phosphor such as fading, reusability and dose response, reveals superior dosimetry features compared to its microcrystalline counterpart. |
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