Etude cinétique des effets de fluence énergétique,de débit de fluence,et d'effacement induits par des ions lourds et des photons γ dans le triacétate de cellulose |
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Authors: | J P Moliton C Boutinaud J C Vareille J L Decossas J L Teyssier B Delaunay |
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Abstract: | The kinetic interpretation of the damage produced by heavy ions ( Kr and Cl from 1 MeV/amu) and γ radiation in cellulose triacetate leads to an exponential dependence on the ion fluence. A comparison of the fading effect produced by heavy ions and γ rays shows that the heavy ions, unlike γ rays, cause irreversible damage. Finally, a nonlinear dependence on the flux of ions and γ rays is found in the kinetics of radiation damage. This result is contrary to the usual assumption that heavy-ion flux, like γ-ray flux, is additive, at least for the fluxes of 109?2 × 1010 ions/cm2s and dose rates of 103–104 Gy/h used in this work. |
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