Isospin effects in nuclear multifragmentation

We develop an improved statistical multifragmentation model that provides the capability to calculate calorimetric and isotopic observables with precision. With this new model we examine the influence of nuclear isospin on the fragment elemental and isotopic distributions. We show that the proposed improvements on the model are essential for studying isospin effects in nuclear multifragmentation. In particular, these calculations show that accurate comparisons to experimental data require that the nuclear masses, free energies, and secondary decay must be handled with higher precision than many current models accord.