Proceedings of the Korean Nuclear Society Conference (한국원자력학회:학술대회논문집)

Korean Nuclear Society (한국원자력학회)
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Study on Material Discrimination by Atomic Number Using Dual Energy ${\gamma}$-Rays

  • Gil, Y.M. (School of Environmental Engineering, Pohang Univ. of Science &Technology) ;
  • Lee, Y.S. (School of Environmental Engineering, Pohang Univ. of Science &Technology) ;
  • Lee, H.S. (School of Environmental Engineering, Pohang Univ. of Science &Technology) ;
  • Cho, M.H. (School of Environmental Engineering, Pohang Univ. of Science &Technology) ;
  • Namkung, W. (School of Environmental Engineering, Pohang Univ. of Science &Technology)
  • Published : 2005.10.27
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Abstract

This study aims to demonstrate the practical value of radioscopic differentiation of materials. The dual energy method is proposed for identifying materials according to atomic numbers. The differentiation of materials is achieved by comparing the attenuation ratio of low and high energy photons. We used gamma-rays of 0.662 MeV and 1.25 MeV and NaI(Tl) scintillation detector with a Multi-channel Analyzer (MCA). We also carried out the Monte Carlo simulation for the case of bremsstrahlung radiation from dual electron beams of 4 MeV and 9 MeV.

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