Montaño-García C, Gamboa-deBuen I
Facultad de Ciencias, UNAM, A. P. 70-842, 04510 México, DF, Mexico.
Radiat Prot Dosimetry. 2006;119(1-4):230-2. doi: 10.1093/rpd/nci653. Epub 2006 Apr 27.
The absorption spectra and glow curves of LiF:Mg,Ti exposed to high doses of 60Co gamma rays as well as the optical density curves and thermoluminescent (TL) response as a function of dose were measured. Absorption peaks around 442 nm (2.8 eV), 307 nm (4.0 eV) and 248 nm (5.0 eV) were observed. The optical density is a linear function of dose up to 2500 Gy and then sublinear for the 5.0 eV band, and for the 4.0 eV band it is sublinear with a filling constant of 2.1 x 10(-4) and 6.2 x 10(-4) Gy(-1). The dose response of the 2.8 eV band is linear from 2500 Gy to 10 kGy with a slope of 1.0 x 10(-5) Gy(-1). Once the absorption spectra were obtained, the glow curves and the TL response were obtained. In the dose range, 290-10,000 Gy, the TL response of peaks 5 and 7 was supralinear-sublinear.
测量了暴露于高剂量60Coγ射线的LiF:Mg,Ti的吸收光谱和发光曲线，以及作为剂量函数的光密度曲线和热释光（TL）响应。观察到在442nm（2.8eV）、307nm（4.0eV）和248nm（5.0eV）附近的吸收峰。光密度在剂量达到2500Gy之前是剂量的线性函数，然后对于5.0eV波段呈亚线性，对于4.0eV波段呈亚线性，填充常数分别为2.1×10(-4)和6.2×10(-4)Gy(-1)。2.8eV波段的剂量响应在2500Gy至10kGy范围内呈线性，斜率为1.0×10(-5)Gy(-1)。一旦获得吸收光谱，就得到了发光曲线和TL响应。在290 - 10000Gy的剂量范围内，峰5和峰7的TL响应是超线性-亚线性的。
