RADIATION PHYSICS AND CHEMISTRY, cilt.213, ss.111211, 2023 (SCI-Expanded)
The thermoluminescence of GdAl3(BO3)4 (GAB) doped with various concentrations of Sm3+ (i.e. from 0.5 to 7 wt
%), prepared by gel combustion, was studied. TL glow peaks at 78 ◦C and 225 ◦C are observed. The intensity of
the glow peak at 225 ◦C increased with a faster heating rate. To gain insight into the trap activation energies, the
methods of Hoogenstraaten and Booth-Bohun-Parfianovitch were used, where the calculated activation energies
are 0.57 eV and 0.60 eV for Peak I and 1.69 eV and 1.71 eV for Peak II respectively. The dose-response of
GAB:0.5 wt%Sm3+ demonstrates robust linearity up to 40 Gy, with a strong correlation coefficient of 0.999. Both
TM-Tstop combined with the Initial Rise (IR) and Computerized Glow Curve Deconvolution (CGCD) techniques
were employed, which revealed six overlapping glow peaks beneath the main peaks. Additionally, the results
suggest that the TL signal can be efficiently exploited for radiation dosimetry applications.