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arxiv: 0911.2017 · v1 · pith:33NQTK7Hnew · submitted 2009-11-10 · ⚛️ physics.med-ph

Nuclear fragmentation reactions in extended media studied with Geant4 toolkit

classification ⚛️ physics.med-ph
keywords nuclearextendedfragmentsgeant4mediamodelmultifragmentationreactions
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It is well known from numerous experiments that nuclear multifragmentation is a dominating mechanism for production of intermediate-mass fragments in nucleus-nucleus collisions at energies above 100 A MeV. In this paper we investigate the validity and performance of the Fermi break-up model and the statistical multifragmentation model implemented as parts of the Geant4 toolkit. We study the impact of violent nuclear disintegration reactions on the depth-dose profiles and yields of secondary fragments for beams of light and medium-weight nuclei propagating in extended media. Implications for ion-beam cancer therapy and shielding from cosmic radiation are discussed.

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