Calculation of optimal thickness of a new beta detector for 90Sr based on Polycarbonate/Bismuth Oxide composite using the ESTAR program

Document Type : Conference Paper

Authors

1 Department of Nuclear Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran

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

Abstract

Detection and dosimetry of ionizing radiation are important and fundamental issues in the nuclear industry. In this study, calculations related to the optimal thickness of a new beta detector for 90Sr source based on Polycarbonate/Bismuth oxide composite material (PC-Bi2O3) for different weight percentages of bismuth oxide fillers in polymer matrix, namely 0 wt%, 10 wt%, 20 wt%, 30 wt%, 40 wt% and 50 wt% were carried out using the ESTAR program. Results showed that the weight percentage of bismuth oxide particles was effective in determining the range and stopping power of the electrons in the composite detector. Finally, for 90Sr, using the evaluation of beta particles range in the aforementioned composite material, the optimal thickness for this detector was calculated.

Keywords


  1. S. Malekie, F. Ziaie. Study on a novel dosimeter based on polyethylene–carbon nanotube composite. Nucl. Instrum. Methods Phys. Res. Sect. A. 791 (2015) 1-5.
  2. S. Malekie, F. Ziaie, A. Esmaeli. Study on dosimetry characteristics of polymer-CNT nanocomposites: Effect of polymer matrix. Nucl. Instrum. Methods Phys. Res., Sect. A. 816 (2016) 101-105.
  3. S. Malekie, F. Ziaie, S. Feizi, A. Esmaeli. Dosimetry characteristics of HDPE-SWCNT nanocomposite for real time application. Nucl. Instrum. Methods Phys. Res. Sect. A. 833 (2016) 127-133.
  4. A. Intaniwet, C. A. Mills, M. Shkunov, P. J. Sellin, J. L. Keddie. Heavy metallic oxide nanoparticles for enhanced sensitivity in semiconducting polymer x-ray detectors. Nanotechnology 23 (2012) 235502.
  5. A. Mosayebi, S. Malekie, F. Ziaie. A feasibility study of polystyrene/CNT nano-composite as a dosimeter for diagnostic and therapeutic purposes. J. Instrum. 12 (2017) P05012.
  6. S. M. Safdari, S. Malekie, S. Kashian, M. Akbari. Experimental investigation of detection response of polycarbonate/Nano Bismuth Oxide nanocomposite to Strontium-90 beta ray standard source. 27th Iran. Nucl. Conf. Ferdowsi University of Mashhad, Mashhad, 2021.
  7. M. F. L'Annunziata. Radiation physics and radionuclide decay. Handbook of Radioactivity Analysis, Chapter 1, pp. 1-162 , Academic Press, 2012.
  8. https://physics.nist.gov/PhysRefData/Star/Text/ESTAR.html.