Abstract

Based on an isospin-dependent quantum molecular dynamics model westudied the influence of a medium correction of an isospin-dependentnucleon-nucleon cross section on the fragmentation at the intermediateenergy heavy-ion collisions. We found that the medium correction froman isospin-dependent nucleon-nucleon cross section increases thedependence of the fragmentation on the isospin effect of in-mediumnucleon-nucleon cross section, at the same time, the momentum-dependentinteraction also produces an important role for enhancing theinfluence of the medium correction on the isospin effect of two-bodycollisions in the fragmentation process.

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