<p>β-phase of Li<sub>3</sub>PO<sub>4</sub> was synthesized at room temperature using chemical Co-precipitation technique, and the γ-phase was obtained by annealing the β-Li<sub>3</sub>PO<sub>4</sub> material at 450&#xa0;°C. The crystallinity and phase transformation (<i>β</i> → <i>γ</i>) were confirmed by the PXRD study of Li<sub>3</sub>PO<sub>4</sub>. SEM and FTIR characterization were used to examine the morphology and chemical groups respectively. Both samples β-Li<sub>3</sub>PO<sub>4</sub> and γ-Li<sub>3</sub>PO<sub>4</sub> were exposed to γ-ray at 100&#xa0;Gy. ML study of irradiated samples was carried out and observed sufficient high ML intensity. When β-Li<sub>3</sub>PO<sub>4</sub> is annealed at 400&#xa0;°C, its maximum ML intensity is observed, whereas γ-Li<sub>3</sub>PO<sub>4</sub> is annealed at 800&#xa0;°C. Among of these γ-Li<sub>3</sub>PO<sub>4</sub> is more sensitive to γ-ray exposure and shows higher intensity of ML signal. On the basis of their dosimetric characteristics, Li<sub>3</sub>PO<sub>4</sub> phosphor can be used as MLD for passive radiation dosimetry.</p>

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Synthesis and ML study of Li3PO4 for γ-ray dosimetry

  • Aniket Bharti,
  • Abhinav Kumar,
  • Manveer Singh,
  • Lucky Sharma,
  • Vishnu Chauhan,
  • Sukhvir Singh,
  • Rajesh Kumar,
  • P. D. Sahare

摘要

β-phase of Li3PO4 was synthesized at room temperature using chemical Co-precipitation technique, and the γ-phase was obtained by annealing the β-Li3PO4 material at 450 °C. The crystallinity and phase transformation (β → γ) were confirmed by the PXRD study of Li3PO4. SEM and FTIR characterization were used to examine the morphology and chemical groups respectively. Both samples β-Li3PO4 and γ-Li3PO4 were exposed to γ-ray at 100 Gy. ML study of irradiated samples was carried out and observed sufficient high ML intensity. When β-Li3PO4 is annealed at 400 °C, its maximum ML intensity is observed, whereas γ-Li3PO4 is annealed at 800 °C. Among of these γ-Li3PO4 is more sensitive to γ-ray exposure and shows higher intensity of ML signal. On the basis of their dosimetric characteristics, Li3PO4 phosphor can be used as MLD for passive radiation dosimetry.