Neutron+Gamma response of undoped and Dy doped MgB₄O₇ thermoluminescence dosimeter

Highlights: • TL properties of MgB₄O₇:Dy⁺³ investigated using ²⁵²Cf source for the first time. • The CGCD results show that MgB₄O₇: Dy⁺³ consists of at least five glow peaks. • The crystal structure of the host lattice is not altered with the Dy⁺³ doping. • The luminescence intensity is higher than TLD-600 and TLD-700 respectively. • So, MgB₄O₇: Dy⁺³ can be considered as neutron + gamma dosimeter. - Abstract: Thermoluminescence properties of undoped and Dy doped MgB₄O₇ compounds were studied with the irradiation of ²⁵²Cf source. The TL kinetic parameters of MgB₄O₇: Dy were studied by computer glow curve deconvolution (CGCD) method. The glow curve structures of 1% Dy doped magnesium tetraborate compound consists of at least five glow peaks with a main dosimetric peak at about 220 °C. The highest sensitivity which is approximately 1.90 and 1.47 times higher than that of TLD-600 and TLD-700 was found for MgB₄O₇: Dy (1 mol%). The results clearly showed that Dysprosium doped magnesium borate has a potential to be considered as the thermoluminescence neutron + gamma dosimeter.