Effects of recording time and residue on dose-response by LiMgPO₄: Tb, B ceramic disc synthesized via improved sintering process

The LiMgPO₄: Tb, B ceramic disc is successfully synthesized via improved sintering method which enables the disc sample to have two flat and smooth surfaces. It is worth mentioning that the OSL signal intensity of LiMgPO₄: Tb, B disc attenuates much faster than that of commercial Al₂O₃: C. It costs only 1 s to reduce the intensity to 10%, but the Al₂O₃:C needs more than 40 s to finish it. Some essential OSL properties related to the dose detection method of this sample also have been systematically investigated. Although the dose-response cure would have better linearity with longer recording time, extended recording time (≥6 s) will not make any contribution to the linearity of the curve. If the bleaching time is more than 35 s, the residue created by previous detection (high dose of 10 Gy) would do almost no influence (with a positive deviation lower than 5.59%) on next lower-dose detection (0.1 Gy). The material would reach its service life when the total-ionizing dose runs up to 30 k Gy. Therefore, the LiMgPO₄: Tb, B ceramic material is a potential candidate for real-time dose monitoring with optical fiber telemetering technology.