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Synthesis and preliminary OSL studies of Ce3+ activated calcium sulfate (CaSO4) for radiation dosimetry

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Abstract

The polycrystalline CaSO4:Ce3+ phosphor samples were successfully synthesized via co-precipitation method. The structural properties of prepared phosphors were evaluated X-ray diffraction (XRD) technique. The XRD pattern of prepared phosphor well match with International centers for diffraction data (ICDD) file and synthesis methods were not affected on XRD pattern. The surface morphology was studied through scanning electronic microscope and morphology of prepared phosphor was found to in submicron ranges. The Ca(1−x)SO4:xCe3+ (x = 0.001, 0.005 and 0.01 mol) phosphor show good Optically Stimulated Luminescence (OSL) response under γ irradiation. The CW-OSL sensitivity of prepared CaSO4:xCe3+ phosphor is 40 times less than that of OSL sensitivity of LiMgPO4:Tb3+ phosphor. The minimum detectable dose (MDD) of CaSO4:Ce3+ phosphor was calculated and found to 91.4 mGy. The photoluminescence (PL) excitation and emission spectra were observed at 296 and 326 nm, respectively. The optimal PL intensity was obtained at 0.001 mol of Ce3+ ion. The effective atomic number (Zeff) of CaSO4:Ce3+ is 15.3 and the phosphor is a candidate for radiation dosimetry.

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Acknowledgements

One of the authors CBP is very much thankful to Dr. D.V. Parwate Department of Chemistry RTM University Nagpur-440025, India for providing the irradiation source for OSL measurements.

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Authors and Affiliations

  1. Department of Physics, Sant Gadge Baba Amravati University, Amravati, 444602, India

    S. K. Omanwar

  2. Department of ASH, MGI-COET, Shegaon, 444203, India

    C. B. Palan

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  1. S. K. Omanwar
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  2. C. B. Palan
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Correspondence to C. B. Palan.

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Omanwar, S.K., Palan, C.B. Synthesis and preliminary OSL studies of Ce3+ activated calcium sulfate (CaSO4) for radiation dosimetry. J Mater Sci: Mater Electron 29, 7388–7392 (2018). https://doi.org/10.1007/s10854-018-8728-6

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  • DOI: https://doi.org/10.1007/s10854-018-8728-6

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