Synthesis and ML study of Li3PO4 for γ-ray dosimetry
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.