Gamboa-deBuen I, Buenfil A E, Ruiz C G, Rodríguez-Villafuerte M, Flores A, Brandan M E
Instituto de Ciencias Nucleares, UNAM, México DF, Mexico.
Phys Med Biol. 1998 Aug;43(8):2073-83. doi: 10.1088/0031-9155/43/8/006.
The dose-response of LiF:Mg,Ti (TLD-100) exposed to 15 and 35 kVp (8.0 +/- 0.1 and 8.1 +/- 0.1 keV effective energy respectively) x-rays and 60Co gamma-rays has been measured in the dose interval from (1.2-5.4) x 10(3) Gy for x-rays, and from 0.14 to 850 Gy for gamma-rays. In both cases the total TL signal and glow curve peaks 3 to 9 show supralinearity. The supralinearity function f(D) is similar for both x-ray beams, except for peak 8, where a 30% difference is observed. The maxima of f(D) for the total TL signal and peaks 5 to 8 are 2.1, 1.7, 6.4, 3.3 and 7.5 respectively for 8.1 keV x-rays and 3.7, 3.1, 13.6, 9.9 and 11.0 for gamma-rays. The measured relative efficiencies for x-rays with respect to 60Co, for the total TL signal and peaks 5 and 7, were 1.04, 0.97 and 3.2 respectively.
已测量了LiF:Mg,Ti（TLD - 100）在分别暴露于15和35 kVp（有效能量分别为8.0±0.1和8.1±0.1 keV）的X射线以及60Coγ射线时的剂量响应，X射线的剂量区间为(1.2 - 5.4)×10³ Gy，γ射线的剂量区间为0.14至850 Gy。在这两种情况下，总热释光（TL）信号以及发光曲线的第3至9个峰均呈现超线性。除了第8个峰观察到30%的差异外，两种X射线束的超线性函数f(D)相似。对于8.1 keV的X射线，总TL信号以及第5至8个峰的f(D)最大值分别为2.1、1.7、6.4、3.3和7.5，对于γ射线则分别为3.7、3.1、13.6、9.9和11.0。对于总TL信号以及第5和7个峰，所测量的X射线相对于60Co的相对效率分别为1.04、0.97和3.2。
