LABORATORI NAZIONALI DI LEGNARO
During the supernova II type explosion the thermodynamical conditions of stellar matter between the protoneutron star and the shock front correspond to the nuclear liquid-gas coexistence region, which can be investigated in nuclear multifragmentation reactions. It is demonstrated, that neutron-rich hot heavy nuclei can be produced in this region. The production of these nuclei may influence dynamics of the explosion and contribute to the synthesis of heavy elements. Properties of these hot nuclei are studied in terrestrial laboratories: Recent experimental data report essential decreasing of the symmetry energy of hot nuclei, this leads to important astrophysical results.

DATA: 17-03-2005