This work reports the luminescence and kinetics parameters of high sensitivity MgB₄O₇ phosphor co-doped with Tm and Dy ions (MgB₄O₇:Tm,Dy) obtained by the solution combustion technique. With the obtained material, sintered dosimeters in form of discs were made and subjected to 1223 K for 3 h and exposed to gamma radiation from a⁶⁰Co source. It was found that these dosimeters show a sensitivity approximately 10 times higher than that shown by the commercial dosimeter TLD-100 (LiF:Mg,Ti). The kinetic parameters from three samples with different concentration of dopants were determined using the initial rise, peak shape and deconvolution methods. Initial rise and peak shape methods showed lower values than those found by the deconvolution method for the main peak (Peak 1). MgB₄O₇:Tm, Dy shows a wide linearity interval of TL response with respect to gamma dose and low coefficient of variability (1.5%). These results suggest that this new high sensitivity phosphor could be a promising material to be used in clinical dosimetry.

这项工作报告了通过溶液燃烧技术获得的与 Tm 和 Dy 离子 (MgB ₄ O ₇ :Tm,Dy)共掺杂的高灵敏度 MgB ₄ O ₇荧光粉的发光和动力学参数。使用所获得的材料，制成圆盘形式的烧结剂量计并经受 1223 K 3 小时的照射，并暴露于来自⁶⁰共同来源。发现这些剂量计的灵敏度比商用剂量计 TLD-100 (LiF:Mg,Ti) 显示的灵敏度高约 10 倍。使用初始上升、峰形和解卷积方法确定了具有不同掺杂浓度的三个样品的动力学参数。初始上升和峰形方法显示的值低于主峰（峰 1）解卷积方法发现的值。MgB ₄ O ₇ :Tm, Dy 显示出相对于伽马剂量和低变异系数 (1.5%) 的 TL 响应的宽线性区间。这些结果表明，这种新的高灵敏度磷光体可能是一种用于临床剂量测定的有前途的材料。