My PhD thesis was in experimental nuclear physics within Research Group (Dynamics and Thermodynamics of nuclear matter) at LPC Caen (France), and the INDRA/FAZIA collaborations, about the density dependence of the symmetry energy and the analysis of the dynamics of heavy ion collisions at Fermi energies using the 4 π INDRA multi-detector data (analysis and simulation through C++, ROOT and KaliVeda) from experiments at GSI and GANIL accelerators. An experimental formation has been gained through participation in the research and development of Z and A identification of nuclear reaction products (R & D FAZIA). My hope is to be able to continue searching for the right questions to answer until the end of my life .