Influence of isospin dependent nuclear charge radii on fragmentation in heavy ion collisions

Abstract We study the initialization effects via nuclear charge radii on fragmentation for the whole mass range of periodic table by taking isospin asymmetric nuclear reactions using Isospin dependent Quantum Molecular Dynamics (IQMD) model. Calculations are performed for three different isospin dependent nuclear charge radii parameterizations as well as for liquid drop model (LDM) radius. Our study reveals that there is a significant role of nuclear charge radii on fragmentation in heavy ion collisions at intermediate energies. The influence on fragmentation due to initialization via nuclear charge radii is more for heavier colliding nuclei compared to lighter colliding nuclei and this influence further reduces with increase in incident energy for lighter colliding nuclei and remains nearly constant for heavier colliding nuclei. Moreover, isospin dependent radius is more suitable to reproduce experimental findings of INDRA Collaboration.