Zahedifar M, Sadeghi E
Physics Department, University of Kashan, Kashan, I.R. Iran.
Radiat Prot Dosimetry. 2013 Dec;157(3):303-9. doi: 10.1093/rpd/nct151. Epub 2013 Jun 13.
Nanoparticles of Cu-doped calcium fluoride were synthesised by using the hydrothermal method. The structure of the prepared nanomaterial was characterised by the X-ray diffraction (XRD) pattern and energy dispersive spectrometer. The particle size of 36 nm was calculated from the XRD data. Its shape and size were also observed by scanning electron microscope. Thermoluminescence (TL) and photoluminescence of the produced phosphor were also considered. The computerised glow curve deconvolution procedure was used to identify the number of glow peaks included in the TL glow curve of the CaF2:Cu nanoparticles. The TL glow curve contains two overlapping glow peaks at ∼413 and 451 K. The TL response of this phosphor was studied for different Cu concentrations and the maximum sensitivity was found at 1 mol% of Cu impurity. Other dosimetric characteristics of the synthesised nanophosphor are also presented and discussed.
采用水热法合成了铜掺杂氟化钙纳米颗粒。通过X射线衍射（XRD）图谱和能量色散光谱仪对制备的纳米材料结构进行了表征。根据XRD数据计算出粒径为36nm。还通过扫描电子显微镜观察了其形状和尺寸。同时也考虑了所制备荧光粉的热释光（TL）和光致发光特性。采用计算机化的发光曲线解卷积程序来确定CaF2:Cu纳米颗粒TL发光曲线中包含的发光峰数量。TL发光曲线在约413K和451K处包含两个重叠的发光峰。研究了该荧光粉在不同铜浓度下的TL响应，发现当铜杂质含量为1mol%时灵敏度最高。还介绍并讨论了合成纳米荧光粉的其他剂量学特性。
