Relative sensitivity of tooth enamel to fission neutrons: Effect of secondary protons

  • Tikunov D
  • Trompier F
  • Ivannikov A
 et al. 
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In the case of in vivo neutron irradiation, tooth enamel is also exposed to secondary ionizing radiation produced in the biological tissues surrounding teeth. It was shown that elastic scattering of reactor neutrons by hydrogen nuclei in soft tissue produces secondary protons with sufficient energies for ionization in the enamel surface. The effect of secondary protons depends on the grain size of enamel powder; for hydrogenous build-up material, dose response of enamel relative to tissue dose increases from 0.012±0.006 (of corresponding value for Co60 photons) for grain size >0.8mm up to 0.029±0.007 for grain size

Author-supplied keywords

  • Electron paramagnetic resonance
  • Human tooth enamel
  • Neutron dosimetry

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