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Investigation of neutron sensitivity of un-doped and Dy-doped CaB4O7 for thermoluminescence applications

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Abstract

In this study, thermoluminescence characteristics of un-doped and Dy-doped calcium tetraborate (CaB4O7) compounds are reported. The polycrystalline powder samples of un-doped and Dy-doped CaB4O7 were prepared by a solid-state reaction at high-temperature method. The identification and characteristics of the obtained compounds were determined by X-ray diffraction, Fourier transform infrared analysis, differential thermal analysis, thermogravimetric analysis, and scanning electron microscopy. The glow curves were obtained using a thermoluminescent reader. Neutron sensitivity, dose–response, and heating rate of CaB4O7 compounds were determined by using a bare 252Cf mixed neutron + gamma (n + γ) source, and dose response results are compared to those of Harshaw TLD-600 and TLD-700 neutron dosimeters (6LiF:Mg,Ti and 7LiF:Mg,Ti). The sensitivity of CaB4O7:Dy (0.5%) sample is approximately 4.35 and 3.36 times higher than that of TLD-600 and TLD-700, respectively.

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Acknowledgements

This work was supported by TÜBİTAK, and the Project Number is 115F268.

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Authors and Affiliations

  1. Department of Engineering Physics, University of Gaziantep, 27310, Gaziantep, Turkey

    Sera İflazoğlu, Vural E. Kafadar & A. Necmeddin Yazıcı

  2. Department of Chemistry, Middle East Technical University, 06531, Ankara, Turkey

    Sera İflazoğlu & Ayşen Yılmaz

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  1. Sera İflazoğlu
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  2. Ayşen Yılmaz
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  3. Vural E. Kafadar
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  4. A. Necmeddin Yazıcı
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Correspondence to Sera İflazoğlu.

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İflazoğlu, S., Yılmaz, A., Kafadar, V.E. et al. Investigation of neutron sensitivity of un-doped and Dy-doped CaB4O7 for thermoluminescence applications. J Therm Anal Calorim 133, 1327–1333 (2018). https://doi.org/10.1007/s10973-018-7200-4

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  • DOI: https://doi.org/10.1007/s10973-018-7200-4

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