Thermoluminescence glow curves of beta irradiated NaBaBO3: Ce3+ phosphor synthesized by combustion method.

• NaBaBO 3 :Ce3+ phosphor is synthesized by a combustion method. • Thermoluminescence properties were conducted. • Activation energies were calculated using IR, Booth-Bohun-Parfianovitch, VHR and CGCD methods. NaBaBO 3 samples incorporated with various concentration of Ce3+ were prepared by combustion method. The influences of rare earth doping in synthesized samples were analyzed by X-ray diffraction (XRD). Optimum doping concentration of NaBaBO 3 :Ce3+ is 0.5 %. Thermoluminescence (TL) kinetic analysis using T m -T stop , initial rise (IR), variable heating rate (VHR) and glow curve deconvolution (GCD) methods were performed on the glow curves of NaBaBO 3 :Ce3+ phosphor material. The T m -T stop analysis revealed that the whole glow curve measured without preheat of the prepared sample is composed of at least six overlapping glow peaks. The number of the glow peaks required to provide best fit to the glow curves of the sample are also estimated using GCD method and one found six glow peaks at all doses (FOM ≤ 1.84 %), which are similar to those from T m -T stop analysis. The dose response of NaBaBO 3 :Ce3+ phosphor sample exposed to beta irradiation is linear up to 10 Gy. The results from experiments indicates that main dosimetric peak of NaBaBO 3 :Ce3+ follows first order kinetic model, which was also supported by dose response plot. The Z effective value of this phosphor is calculated to be 46.66. Present findings confirm that NaBaBO 3 :Ce3+ phosphor sample is a promising candidate for applications in environmental dosimetry as one depicts good TL dose response with adequate sensitivity and linearity. [ABSTRACT FROM AUTHOR]