en fr Relationship between statistical and dynamical properties of fragments produced at Fermi energy in heavy ion collisions Liens entre les propriétés statistiques et dynamiques des fragments produits lors des collisions dionReportar como inadecuado




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1 LPCC - Laboratoire de Physique Corpusculaire de Caen

Abstract : The properties of the fragments produced in heavy-ion collisions around the Fermi energy have been studied through the isospin degree of freedom.Firstly a theoretical ap- proach based on a lattice gas model with two types of particles neutron,proton interacting by an isospin dependent and Coulomb interactions was developped.The study of the phase diagram shows that this system presents three different phases liquid,gas,fission. In the liquid and gas phases, the energy of the system was described by a density functional, where the temperature dependence acts only on the density.The symmetry term of this functional was related to the isotopic content of the biggest fragment via an isoscaling ana- lysis.Secondly a systematic study of the stopping power of the nuclear matter and isospin equilibration of light particles in the most violent collisions was carried out using the expe- rimental data taken by the INDRA multidetector at GANIL and GSI. Two stopping power regimes appear ; at low energy



Autor: G. Lehaut -

Fuente: https://hal.archives-ouvertes.fr/



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