Abstract
Using the isospin-dependent quantum molecular dynamics (IQMD) model, a study on the fragmentation of isotopic, isobaric, and isotonic reacting partners is presented. The partitioning of the fragmenting system into gas (low density) and liquid (high density) phases in semicentral collisions of medium mass systems is investigated at various beam energies ranging between 100 and 400 MeV/nucleon. Our findings revealed a crossover of gas/liquid content with the beam energy and the energy where gas and liquid content become equal is labeled as cross-over energy. The influence of isospin degree of freedom (via nuclear symmetry energy, Coulomb potential, and nucleon-nucleon scattering cross section) on the cross-over energy is investigated in detail and our study revealed the dominant role of symmetry potential over the other two isospin effects. Our study also concludes that cross-over energy can act as a sensitive probe of density dependence of nuclear symmetry energy at suprasaturation densities.
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