Dosimetric features and kinetic parameters of a glass system dosimeter.

Lithium borate (LB) glasses doped with dysprosium oxide (Dy2 O3 ) have been prepared by utilizing the conventional melt-quench technique. The prepared glass samples were exposed to 60 Co to check their dosimetric features and kinetic parameters. These features involve glow curves, annealing, fading, reproducibility, minimum detectable dose (MDD), and effective atomic number (Zeff ). Kinetic parameters including the frequency factors and activation energy were also determined using three methods (glow curve analysis, initial rise, and peak shape method) and were thoroughly interpreted. In addition, the incorporation of Dy impurities into LB enhanced the thermoluminescence sensitivity ~170 times. The glow from LB:Dy appeared as a single prominent peak at 190°C. The best annealing proceeding was obtained at 300°C for 30 min. Signal stability was reported for a period of 1 and 3 months with a reduction of 26% and 31%, respectively. The proposed glass samples showed promising dosimeter properties that can be recommended for personal radiation monitoring.

[1]  K. Abushab,et al.  Effect of co-doping of lithium on the dosimetric properties of dysprosium-doped sodium borate glass system , 2019, Physica B: Condensed Matter.

[2]  S. Hashim,et al.  Glow curve analysis of glassy system dosimeter subjected to photon and electron irradiations , 2018, Results in Physics.

[3]  S. Singh,et al.  Structural, optical and thermoluminescence study of Dy3 + ion doped sodium strontium borate glass , 2017 .

[4]  S. Hashim,et al.  Effect of Dy2O3 impurities on the physical, optical and thermoluminescence properties of lithium borate glass , 2016 .

[5]  S. Hashim,et al.  Thermoluminescence properties of lithium magnesium borate glasses system doped with dysprosium oxide. , 2015, Luminescence : the journal of biological and chemical luminescence.

[6]  S. Hashim,et al.  Luminescence characteristics of Li2O-MgO-B2O3 doped with Dy3+ as a solid TL detector , 2015 .

[7]  Shyam Sundar Ghoshal,et al.  Influences of dysprosium and phosphorous oxides co-doping on thermoluminescence features and kinetic parameters of lithium magnesium borate glass , 2015, Journal of Radioanalytical and Nuclear Chemistry.

[8]  V. Ramasamy,et al.  Determination of thermoluminescence kinetic parameters of thulium doped lithium calcium borate , 2011 .

[9]  G. Amarendra,et al.  Dosimetric characteristics of manganese doped lithium tetraborate – An improved TL phosphor , 2011 .

[10]  N. Dantas,et al.  Thermoluminescence, structural and magnetic properties of a Li2O–B2O3–Al2O3 glass system doped with LiF and TiO2 , 2011 .

[11]  C. M. Sunta,et al.  Use of initial rise method to analyze a general-order kinetic thermoluminescence glow curve , 2009 .

[12]  K. Nakashima,et al.  Thermoluminescence mechanism of dysprosium-doped β-tricalcium phosphate phosphor , 2005 .

[13]  M. Maghrabi,et al.  Sensitization of the thermoluminescence response of CaF2 phosphors , 2003 .

[14]  C. Furetta,et al.  Dosimetric characteristics of tissue equivalent thermoluminescent solid TL detectors based on lithium borate , 2001 .

[15]  V. Mathur,et al.  High dose measurements using thermoluminescence of CaSO4:Dy , 1999 .

[16]  C. Furetta,et al.  Applicability in Dosimetry of Thermoluminescent Li2B407 Doped with Cu or Eu Impurities , 1996 .

[17]  M. Balarin.  Direct evaluation of activation energy from half‐width of glow peaks and a special nomogram , 1975 .

[18]  Reuven Chen.  Glow Curves with General Order Kinetics , 1969 .

[19]  A. Gibson,et al.  The Electron Trap Mechanism of Luminescence in Sulphide and Silicate Phosphors , 1948 .