A peer-reviewed journal published by K. N. Toosi University of Technology

Document Type : Research Article

Authors

1 Department of Physics‎, ‎K.N‎. ‎Toosi University of Technology‎, ‎Tehran‎, ‎Iran

2 Radiation Application Research School‎, ‎Nuclear Science and Technology Research Institute‎, ‎Tehran‎, ‎Iran

Abstract

In this research work, commercial beta-tricalcium phosphate powder is converted into tablets by pressure-less sintering method. Thermoluminescence responses of tablet and powder samples in the dose range of 20 to 1500 Gy have been compared and effective factors in tablet conversion such as mass in the range of 30 to 60 mg, force between 1 to 3 N, concentration of granulating solution and tablet diameter in the range of 0.4 to 15 mm are investigated based on the results of dosimetric response and tablet hardness. The results show that by turning into tablets, the grain size increases, and the possibility of the first-order kinetics increases by the conversion of powders into tablets. It is possible to achieve a better dosimetric response than the it’s powder by applying suitable conditions for turning into tablets; also, the diameter of the sample can affect hardness, and it is better to make the tablets with a smaller size. Based on the results obtained from fading, reproducibility, sensitivity, peak shaping of the glow curve, and microhardness measurement, it can be seen that the samples that have been subjected to less pressure perform better and in order to achieve the desired results of converting to TLD dosimetry tablets, it is better to use more mass for tablets if more pressure is needed.

Highlights

  • Conversion of commercial β-TCP powder into tablets by pressure-less sintering method.
  • Comparison of TL response of tablet and powder samples in the dose range of 20 to 1500 Gy.
  • Investigating the effects of fading, reproducibility, sensitivity, formation of the peaks, and microhardness measurement.
  • Increasing the grain size by turning it into tablets.
  • Increasing probability of first-order kinetics with tablet conversion

Keywords

Main Subjects

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