Thermoluminescence characteristics of neodymium-doped silicon dioxide optical fibers subjected to X-ray

摘要

In this article, we investigate thermoluminescence properties of Nd3+ doped silicon dioxide optical fiber. The samples were exposed to 10 MV X-ray using a linear accelerator. The optical fiber was read out using Harshaw 3500 TLD reader. Nd-doped optical fiber displays a linear TL response for the absorbed dose. The sensitivity of Nd-doped optical fiber is 82.87 nC. mg(-1) Gy(-1), which is more sensitive to the other types of optical fiber. Nd+3-doped optical fiber displays clear single glow peak around 180A degrees C. The peak shape method analysis reveals that the peaks obey general order kinetics. The activation energy of Nd-doped optical fiber is found to be nearly 0.5 eV less than TLD-100 (1.6 eV). Z (eff) of neodymium-doped silicon dioxide optical fiber is 13.48 that is near to the human bone. All of these TL characteristics indicate that Nd107-doped optical fiber as a potential TL dosimeter, for measuring photon irradiation.