Thermoluminescence Characteristics of SrB_6O_(10)∶Tb

摘要

SrB6O 10∶Tb phosphor was synthesized by high-temperature solid state reaction. The influences of Ce or Li as a co-dopant, Tb concentration and irradiation dose exposure on TL of SrB6O 10∶Tb were investigated. Results show that Ce or Li as a co-dopant can not improve the sensitivity of SrB6O 10∶Tb phosphor. TL response depends on Tb concentration and 0.02 is the optimum in the concentration range from 0.01 to 0.10. Using the optimum Tb concentration, we calculated the kinetic parameters of SrB6O 10∶Tb employing the peak shape method, and suggested the phosphor obeying the second order kinetics. TL emission intensity is linearly dependent on the irradiation dose within the dose range of 50～200 Gy. The characteristic Tb 3+ ion emission was observed in TL emission spectrum.