2002/08/01 by P. M. Milazzo, A. S. Botvina, G. Vannini +11
Engineering · Physics and Astronomy · #Astronomical and nuclear sciences #Nuclear physics research studies #Nuclear reactor physics and engineering #nucl-ex
paper · pdf · doi:10.1103/physrevc.66.021601
published as Phys.Rev. C66 (2002) 021601 · 9 pages, 4 ps figures
arxiv created 2002/08/01 · openalex publication_date 2002/08/21 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Studies on the isospin of fragments resulting from the disassembly of highly excited large thermal-like nuclear emitting sources, formed in the 197Au+197Au reaction at 35 MeV/nucleon beam energy, are presented. Two different decay systems (the quasiprojectile formed in midperipheral reactions and the unique source coming from the incomplete fusion of projectile and target in the most central collisions) were considered; these emitting sources have the same initial N/Z ratio and excitation energy (E*\ensuremath≃5--6MeV/nucleon), but different size. Their charge yields and isotopic content of the fragments show different distributions. It is observed that the neutron content of intermediate mass fragments increases with the size of the source. These evidences are consistent with chemical equilibrium reached in the systems. This fact is confirmed by the analysis with the statistical multifragmentation model.