Etude de la fragmentation du 12C sur cible mince à 95 MeV/A pour la hadronthérapie

Abstract : The nuclear models need to be improved in order to reach the required accuracy for a reference simulation code for hadrontherapy. In this context, two experiments have been performed by our collaboration on May 2011 and September 2013 at GANIL to study nuclear reactions of 95 MeV/u 12C ions on thin targets of medical interest to measure the double differential fragmentation cross sections of each produced isotope. These experimental data have been compared with Monte-Carlo simulations. Different nuclear models provided by the GEANT4 simulation toolkit have firstly been tested. These simulations revealed discrepancies up to one order of magnitude. The phenomenological model HIPSE has then been used and has shown that the overlapping region of two colliding nuclei needs to be taken into account in order to reproduce the kinematics of the emitted fragments at intermediates energies. Due to the difficulties encountered by these models in the data reproduction, a new model is currently under development : SLIIPIE. This one is a semi-microscopical model, built from a participant-spectator geometrical approach. This model was also compared to the experimental data for 12C+12C reactions at 95 MeV/A giving promising results.
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Submitted on : Monday, September 29, 2014 - 3:34:34 PM
Last modification on : Thursday, September 5, 2019 - 3:31:05 PM
Long-term archiving on : Tuesday, December 30, 2014 - 11:35:13 AM

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  • HAL Id : tel-01069644, version 1

Citation

J. Dudouet. Etude de la fragmentation du 12C sur cible mince à 95 MeV/A pour la hadronthérapie. Physique Médicale [physics.med-ph]. Université de Caen, 2014. Français. ⟨tel-01069644⟩

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