Thermoluminescence kinetics of Li6GdB3O9 crystals

• Published in: Optical materials Vol. 36; no. 9; pp. 1571 - 1579
• Main Authors: Ogorodnikov, I.N., Vostrov, D.O., Pustovarov, V.A., Sedunova, I.N.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.07.2014
• Subjects: Li6GdB3O9; Lithium–gadolinium orthoborate; Luminescence spectra; Numerical simulation; Thermoluminescence; Luminescence spectra; Numerical simulation; Lithium–gadolinium orthoborate; Li6GdB3O9; Thermoluminescence
• ISSN: 0925-3467; 1873-1252
• DOI: 10.1016/j.optmat.2014.04.033

•We studied both the Li6GdB3O9 crystals and crystal-fibers.•We measured the X-ray induced luminescence and thermoluminescence.•System of differential equations was solved for thermoluminescence data.•Parameters of the recombination processes were determined.•Mathematical model of thermoluminescence (90–350K) was put forward. Thermally stimulated recombination processes in both the crystal-fibers and single crystals of lithium–gadolinium orthoborate Li6GdB3O9, were studied using thermoluminescence (TL), X-ray-induced luminescence (XRL), and numerical modeling techniques. XRL-spectra were examined at 90 and 290K. Glow curves (spectral-integrated and spectral-resolved) were investigated in the temperature range from 90 to 500K after irradiation with X-rays at 90K. Numerical simulation was performed by solving the complete system of differential equations of balance. In the framework of the unified model, we carried out the calculations of the recombination processes and interpretation of the results with the involvement of the available experimental data on undoped lithium gadolinium orthoborate in both the crystal-fiber and single crystal forms.