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<p>Ca<sub>10</sub>K(PO<sub>4</sub>)<sub>7</sub>:Eu<sup>3+</sup> micro-phosphor was synthesized using the solid-state reaction method. X-ray diffraction (XRD) and scanning electron microscopy (SEM) characterization revealed a hexagonal structure, with an average crystallite size of 28 ± 4&#xa0;nm and an average particles size of 1.2 ± 0.05&#xa0;µm. Photoluminescence studies revealed characteristics Eu<sup>3+</sup> emission peaks at 593&#xa0;nm, 652&#xa0;nm, 702&#xa0;nm, and 617&#xa0;nm, respectively, corresponding to the <sup>5</sup>D<sub>0</sub> → <sup>7</sup>F<sub>1</sub>, <sup>5</sup>D<sub>0</sub> → <sup>7</sup>F<sub>2</sub>, <sup>5</sup>D<sub>0</sub> → <sup>7</sup>F<sub>3,</sub> and <sup>5</sup>D<sub>0</sub> → <sup>7</sup>F<sub>4</sub> transitions. Thermoluminescence analysis showed a glow curve centered at 229&#xa0;°C. Linear dose response from 0.5&#xa0;Gy to 8.5&#xa0;kGy was observed upon <sup>60</sup>Co gamma irradiation. Trap levels in Ca<sub>10</sub>K(PO<sub>4</sub>)<sub>7</sub>:Eu<sup>3+</sup> were analysed by Initial Rise Method (IRM). Kinetic parameters were determined using the Glow Curve Deconvolution (GCD) method.</p>

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Thermoluminescence characteristics of Ca10K(PO4)7:Eu3+ phosphor for gamma radiation dosimetry

  • 期刊论文

  • 发表日期：

    2025年10月4日

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  • Sandhya B. Deshmukh,
  • Preeti Padhye Kulkarni,
  • Kishor H. Gavhane,
  • Yogeshri Bagekari,
  • Mahesh S. Bhadane,
  • S. S. Dahiwale,
  • S. D. Dhole

摘要

Ca10K(PO4)7:Eu3+ micro-phosphor was synthesized using the solid-state reaction method. X-ray diffraction (XRD) and scanning electron microscopy (SEM) characterization revealed a hexagonal structure, with an average crystallite size of 28 ± 4 nm and an average particles size of 1.2 ± 0.05 µm. Photoluminescence studies revealed characteristics Eu3+ emission peaks at 593 nm, 652 nm, 702 nm, and 617 nm, respectively, corresponding to the 5D0 → 7F1, 5D0 → 7F2, 5D0 → 7F3, and 5D0 → 7F4 transitions. Thermoluminescence analysis showed a glow curve centered at 229 °C. Linear dose response from 0.5 Gy to 8.5 kGy was observed upon 60Co gamma irradiation. Trap levels in Ca10K(PO4)7:Eu3+ were analysed by Initial Rise Method (IRM). Kinetic parameters were determined using the Glow Curve Deconvolution (GCD) method.