2003/05/31 by M. Veselsky, M. Veselský, G. A. Souliotis +1 · 1 citation
Physics and Astronomy · #Atomic and Molecular Physics #High-Energy Particle Collisions Research #Nuclear physics research studies #nucl-ex
paper · pdf · doi:10.1103/physrevc.69.031602
4 pages, 4 figures, RevTeX, to appear in Physical Review C
arxiv created 2004/02/12 · openalex publication_date 2004/03/16 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The isoscaling is investigated using the fragment yield data from fully reconstructed quasiprojectiles observed in peripheral collisions of 28Si with 124,112Sn at projectile energies 30 and 50\phantom\rule0.3em0exMeV∕nucleon. The excitation energy dependence of the isoscaling parameter \ensuremathβ^\ensuremath' is observed which is independent of beam energy. For a given quasiprojectile produced in reactions with different targets no isoscaling is observed. The isoscaling thus reflects the level of N∕Z equilibration in reactions with different targets represented by the initial quasiprojectile samples. The excitation energy dependence of the isoscaling parameter \ensuremathβ^\ensuremath', corrected for the trivial 1∕T temperature dependence, does not follow the trend of the homogeneous system above 4\phantom\rule0.3em0exMeV∕nucleon thus possibly signaling the onset of separation into isospin asymmetric dilute and isospin symmetric dense phase.