Gómez-Ros J M, Correcher V, García-Guinea J, Delgado A
CIEMAT, Madrid, Spain.
Radiat Prot Dosimetry. 2002;100(1-4):399-402. doi: 10.1093/oxfordjournals.rpd.a005899.
The thermoluminescence (TL) glow curves of irradiated annealed and non-annealed synthetic beta-quartz (Li0.73Al0.73Si1.27O4) synthesised using the ceramic method have been studied. Annealed samples (1200 degrees C for 12 h) exhibit some changes of shape and intensity in the TL glow curves when compared to non-annealed samples in the range of 0.1-5 Gy. These changes can be attributed mainly to thermal alkali self-diffusion through the lattice interfaces involving modifications in the components of the luminescent traps. In non-annealed samples six groups of components at about 100 degrees C, 130 degrees C, 160 degrees C, 210 degrees C, 330 degrees C and 450 degrees C can be found, whereas annealed samples only display one very intense peak at a lower temperature (deconvoluted into three peaks at 90 degrees C, 105 degrees C and 130 degrees C) and a lower intensity second wide broad emission at approximately 240 degrees C. In this paper, a computerised curve-fitting based on general order kinetics has been used to characterise the glow curve structure resolving trapping parameters for each glow peak: trap depth (E), frequency factor (s) and the order of the kinetics (b). The dose dependence of the individual components of the glow curve has been also studied. These data allow us to select the most stable component for use in dosimetric purposes.
对采用陶瓷法合成的辐照退火和未退火的合成β-石英（Li0.73Al0.73Si1.27O4）的热释光（TL）发光曲线进行了研究。与0.1 - 5 Gy范围内的未退火样品相比，退火样品（1200℃，12小时）的TL发光曲线在形状和强度上表现出一些变化。这些变化主要可归因于热碱通过晶格界面的自扩散，这涉及发光陷阱成分的改变。在未退火样品中，可以发现六组约100℃、130℃、160℃、210℃、330℃和450℃的成分，而退火样品仅在较低温度下显示一个非常强的峰（解卷积为90℃、105℃和130℃的三个峰）以及在约240℃处强度较低的第二个宽发射峰。在本文中，基于一般阶动力学的计算机化曲线拟合已被用于表征发光曲线结构，解析每个发光峰的俘获参数：陷阱深度（E）、频率因子（s）和动力学阶数（b）。还研究了发光曲线各成分的剂量依赖性。这些数据使我们能够选择最稳定的成分用于剂量测定目的。
