Determination of Thermoluminescence Kinetic Parameters of ZnB2O4:La Phosphors

Küçük N., Gözel A. H., TOPAKSU M., YÜKSEL M.

International Congress in Honour of Professor Ravi P. Agarwal, Bursa, Turkey, 23 - 26 June 2014, pp.218

  • Publication Type: Conference Paper / Summary Text
  • City: Bursa
  • Country: Turkey
  • Page Numbers: pp.218
  • Çukurova University Affiliated: Yes

Abstract

Thermoluminescence (TL) glow curves of 1%, 2%, 3% and 4% ZnB2O4: La phosphors synthesized by nitric acid method were obtained by irradiation at the dose range of 143 mGy - 60 Gy with 90Sr/90Y beta source, which has 40 mCi activity, included in the Ris TL/OSL DA-20 reader system. TL glow curves were recorded after pre-heating process at 140oC and then heating up to 450oC in nitrogen atmosphere at a constant heating rate of 5oC/s. In this study, with the help of glow curve readings, kinetic parameters of the main TL glow peaks of ZnB2O4: La phosphors (i.e. activation energies and frequency factors) were determined and evaluated by the method of Computerized Glow Curve Deconvolution (CGCD), Peak Shape (PS) method and Initial Rise (IR) method. In conclusion, kinetic parameters found in this study by the methods applied to ZnB2O4: La phosphors were consistent with each other.