Radiation-induced defects in manganese-doped lithium tetraborate phosphor

triangles. The mechanism for thermoluminescence in this phosphor was proposed based on the thermo-luminescence (TL) emission spectra, kinetic analysis of TL glow curves and electron paramagnetic resonance (EPR) measure-ments on non-irradiated and gamma-irradiated phosphors. It was identified that oxygen vacancies and Boron oxygen hole centre(BOHC) are the electron and hole trap centres for TL in this phosphor. When the phosphor is heated, the electrons are releasedfrom the electron trap and recombinewith the trapped holes. The excitation energyduring the recombination istransferred to thenearbyMn