Shinde K N, Dhoble S J
Department of Physics, N.S. Science and Arts College, Bhadrawati 442902, India.
Radiat Prot Dosimetry. 2012 Dec;152(4):463-7. doi: 10.1093/rpd/ncs074. Epub 2012 May 17.
Dy(3+)-doped NaCaPO(4) phosphor was synthesised at an initiating combustion temperature of 600°C, using urea as the fuel. The crystallinity of the phosphor was investigated by using X-ray diffraction. The photoluminescence and thermoluminescence (TL) behaviours of NaCaPO(4):Dy(3+) phosphor was also studied. It has a simple TL glow curve structure, which does not change when exposed to gamma-rays. A TL glow peak is observed at 230°C and TL intensity is around 1.15 times more compared with commercial CaSO(4):Dy TLD phosphor. The TL characteristics of the phosphor prepared show that it has good sensitivity, linear response with gamma-rays exposure, emission in the blue-yellow regions of the spectrum, negligible fading and excellent reusability. These results make Dy(3+)-doped NaCaPO(4) phosphor attractive for TLD applications.
采用尿素作为燃料，在600°C的起始燃烧温度下合成了掺镝（Dy(3+)）的磷酸钠钙（NaCaPO(4)）荧光粉。通过X射线衍射研究了荧光粉的结晶度。还研究了NaCaPO(4):Dy(3+)荧光粉的光致发光和热释光（TL）行为。它具有简单的热释光发光曲线结构，在受到γ射线照射时不会改变。在230°C观察到一个热释光发光峰，与商用硫酸钙（CaSO(4):Dy）热释光剂量计荧光粉相比，热释光强度约高1.15倍。所制备荧光粉的热释光特性表明，它具有良好的灵敏度、对γ射线照射的线性响应、在光谱蓝黄区域的发射、可忽略不计的褪色以及出色的可重复使用性。这些结果使得掺镝（Dy(3+)）的磷酸钠钙（NaCaPO(4)）荧光粉在热释光剂量计应用中具有吸引力。
Zotero 插件