Nehate A K, Joshi T R, Kathuria S P, Joshi R V
Health Phys. 1986 Apr;50(4):485-91. doi: 10.1097/00004032-198604000-00005.
This paper studies the thermoluminescence (TL) glow curves of NaCl:Ca(T) phosphors to various doses of 253.7-nm ultraviolet (UV) radiation at room temperature. TLD grade NaCl:Ca(T) material was obtained by crystallization from solution and was subsequently annealed at 750 degrees C for 2 h, followed by sudden quenching. We undertook measurement of the effect of variable UV radiation doses (10(2) to 10(6) J m-2) on the TL behaviour of NaCl:Ca(T) phosphors. It was observed that the phosphor exhibits a dominant peak around 167 degrees C along with a weak peak at lower temperature. The high-temperature peak (Peak II) is found to grow linearly with the increase in UV dose in the range of 10(2) to 10(6) J m-2. Since the nature of the glow curves under the influence of different doses remains more or less identical, it is believed that the phosphor does not undergo radiation damage and displays high intrinsic TL around Peak II. Examination of the system for fundamental dosimetry requirements shows that it can be used in dosimetry work at 253.7 nm.
本文研究了室温下NaCl:Ca(T)磷光体对不同剂量253.7纳米紫外线（UV）辐射的热释光（TL）发光曲线。TLD级NaCl:Ca(T)材料通过溶液结晶获得，随后在750摄氏度下退火2小时，接着快速淬火。我们测量了可变UV辐射剂量（10²至10⁶ J m⁻²）对NaCl:Ca(T)磷光体TL行为的影响。观察到该磷光体在167摄氏度左右呈现一个主峰，同时在较低温度处有一个弱峰。发现高温峰（峰II）在10²至10⁶ J m⁻²范围内随UV剂量增加呈线性增长。由于在不同剂量影响下发光曲线的性质大致相同，据信该磷光体未遭受辐射损伤，并且在峰II附近显示出高本征热释光。对该系统进行基本剂量学要求检查表明，它可用于253.7纳米的剂量学工作。
