2006/01/25 by W. D. TIAN, W. D. Tian, Y. G. Ma +22
Chemistry · Physics and Astronomy · #Advanced Physical and Chemical Molecular Interactions #Constant (computer programming) #Density dependence #Energy (signal processing) #Exponential decay #Isospin #Quantum Mechanics and Non-Hermitian Physics #Spectroscopy and Quantum Chemical Studies #Symmetry (geometry) #nucl-ex #nucl-th
paper · pdf · doi:10.1142/s0218301308010714
published as Int.J.Mod.Phys.E17:1705-1719,2008 · 10 pages, 10 figures
arxiv created 2006/01/25 · openalex publication_date 2008/10/01 · openalex created_date 2016/06/24 · arxiv updated 2016/09/07 · openalex updated_date 2026/08/05
Isoscaling properties of the primary and final products are studied via isospin dependent quantum molecular dynamics (IQMD) model and the followed sequential decay model GEMINI, respectively. Both primary and final products isoscaling parameter α keeps no significant change for light fragments, but increases with the mass for intermediate and heavy products. The dynamical effect on isoscaling is reflected on the α decreasing a little with the evolution time of the system, and opposite trend for the heavy products. The secondary decay effect on isoscaling is reflected on the increasing of the α value for the final products which experienced secondary decay process. Furthermore the density dependence of the symmetry energy has also been explored for the primary and secondary products, the symmetry energy coefficient can be expressed by the form of C sym (ρ) ~ C 0 (ρ/ρ 0 ) γ , C 0 and γ extracted from the primary products are consistent with the input parameters, but C 0 and γ extracted from the final products deviate the input values. In the paper we also suggest that it might be more reasonable to describe the density dependence of the symmetry energy coefficient by the C sym (ρ/ρ 0 ) ≈ C 1 (ρ/ρ 0 ) γ soft + C 2 (ρ/ρ 0 ) γ stiff with γ soft ≤ 1, γ stiff ≥ 1 and C 1 , C 2 constant parameters.