CONICET | Buscador de Institutos y Recursos Humanos

The study of neutron rich matter, present in neutron star, proto-neutron stars and core-collapse supernovae,can lead to further understanding of the behavior of nuclear matter in highly asymmetric nuclei. Heteroge-neous structures are expected to exist in these systems, often referred to as nuclear pasta. We have carriedout a systematic study of neutrino opacity for different thermodynamic conditions in order to assess theimpact that the structure has on it. We studied the dynamics of the neutrino opacity of the heterogeneousmatter at different thermodynamic conditions with semiclassical molecular dynamics model already used tostudy nuclear multifragmentation. For different densities, proton fractions and temperature, we calculatethe very long range opacity and the cluster distribution. The neutrino opacity is of crucial importance forthe evolution of the core-collapse supernovae and the neutrino scattering.