Advances in materials Research

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A study of energy absorption and exposure buildup factors in natural uranium

  • Salehi, Danial (Department of Radiological and Nuclear Engineering, Science and Research Branch, Islamic Azad University) ;
  • Sardari, Dariush (Department of Radiological and Nuclear Engineering, Science and Research Branch, Islamic Azad University) ;
  • Jozani, M.S. (Faculty of Engineering, Islamic Azad University)
  • Received : 2014.12.02
  • Accepted : 2015.02.25
  • Published : 2015.03.25
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Abstract

Energy absorption and exposure buildup factor have been computed for natural uranium in the energy range of 0.05-15MeV up to penetration depth of 40 mfp. Five-parameter geometric progression (G-P) fitting method has been used to compute buildup factors of uranium. The variation of energy absorption and exposure buildup factors with, penetration depth and incident photon energies for the uranium has been studied. It has been concluded that the values of energy absorption and exposure buildup factors are very large at 0.15 MeV.

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