Thermoluminescence kinetic analysis and dosimetry features of MgSO4:Dy and MgSO4:Cu nano-rods

• MgSO4:Dy and MgSO4:Cu nano-rods were synthesized for the first time.
• Thermoluminescence dosimetry properties were studied.
• The nano-phosphors showed linear dose response up to very high dose levels.
• The synthesized nano-rods have potential application for high dose dosimetry.

MgSO4:Dy and MgSO4:Cu nano-rods (NRs) were synthesized for the first time by semi co- precipitation method. X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive spectrometry (EDS) were utilized for sample characterization. The optimum amount of dysprosium and copper concentrations were obtained both at 0.1 mol% in MgSO4:Dy and MgSO4:Cu NRs. Tm-Tstop and computerized glow curve deconvolution (CGCD) methods were used for identifying the number of component glow peaks and kinetic parameters of the synthesized NRs. Initial rise and variable heating rate methods were also used to ensure the reliability of obtained kinetic parameters. Results show that the TL sensitivity of MgSO4:Dy is about 7 times more than that of magnesium sulfate doped with Cu. The TL dose response of MgSO4:Dy and MgSO4:Cu NRs are linear up to absorbed dose of 10 KGy. Other TL dosimetry characteristics of the produced NRs are also presented and discussed.