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


Oglakci M., TOPAKSU M. , Can N.

SENSORS AND ACTUATORS A-PHYSICAL, cilt.315, 2020 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 315
  • Basım Tarihi: 2020
  • Doi Numarası: 10.1016/j.sna.2020.112299
  • Dergi Adı: SENSORS AND ACTUATORS A-PHYSICAL

Özet

NaBaBO3 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). Opti-mum doping concentration of NaBaBO3: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 NaBaBO3: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 NaBaBO3:Ce3+ phosphor sample exposed to beta irradiation is linear up to 10 Gy. The results from experiments indicates that main dosimetric peak of NaBaBO3: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 NaBaBO3:Ce3+ phosphor sample is a promising candidate for applications in environmental dosimetry as one depicts good TL dose response with adequate sensitivity and linearity. (c) 2020 Elsevier B.V. All rights reserved.