dorsal/arxiv
View SchemaDynamical and sequential decay effects on isoscaling and density dependence of the symmetry energy
| Authors | W. D. Tian, Y. G. Ma, X. Z. Cai, D. Q. Fang, W. Guo, C. W. Ma, G. H. Liu, W. Q. Shen, Y. Shi, H. W. Wang, K. Wang, W. Xu, T. Z. Yan |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0601079 |
| URL | https://arxiv.org/abs/nucl-th/0601079 |
| DOI | 10.1142/S0218301308010714 |
| Journal | Int.J.Mod.Phys.E17:1705-1719,2008 |
Abstract
The 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. It is found that the isoscaling parameters $\alpha$ of both primary and final products keep no significant change for light fragments, but increases with the mass for intermediate and heavy products. The dynamical effects on isoscaling are exhibited by that $\alpha$ value decreases a little with the evolution time of the system, and opposite trend for the heavy products. The secondary decay effects on isoscaling are reflected in the increasing of the $\alpha$ value for the final products which experiences secondary decay process. Furthermore the density dependence of the symmetry energy has also been explored, it is observed that in the low densities the symmetry energy coefficient has the form of $C_{sym}(\rho)\sim C_{0}(\rho/\rho_{0})^{\gamma}$, where $\gamma = 0.7 \sim 1.3$ for both primary and final products, but $C_{0}$ have different values for primary and final products. It is also suggested that it might be more reasonable to describe the density dependence of the symmetry energy coefficient by the $C_{sym}(\rho/\rho_{0})\approx C_{1}(\rho/\rho_{0})^{\gamma_{soft}} + C_{2}(\rho/\rho_{0})^{\gamma_{stiff}}$ with $\gamma_{soft}\leq 1$, $\gamma_{stiff}\geq 1$ and $C_{1}, C_{2}$ constant parameters.
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"abstract": "The isoscaling properties of the primary and final products are studied via\nisospin dependent quantum molecular dynamics\n (IQMD) model and the followed sequential decay model GEMINI, respectively. It\nis found that the isoscaling parameters $\\alpha$ of both primary and final\nproducts keep no significant change for light fragments, but increases with the\nmass for intermediate and heavy products. The dynamical effects on isoscaling\nare exhibited by that $\\alpha$ value decreases a little with the evolution time\nof the system, and opposite trend for the heavy products. The secondary decay\neffects on isoscaling are reflected in the increasing of the $\\alpha$ value for\nthe final products which experiences secondary decay process.\n Furthermore the density dependence of the symmetry energy has also been\nexplored, it is observed that in the low densities the symmetry energy\ncoefficient has the form of $C_{sym}(\\rho)\\sim C_{0}(\\rho/\\rho_{0})^{\\gamma}$,\nwhere $\\gamma = 0.7 \\sim 1.3$ for both primary and final products, but $C_{0}$\nhave different values for primary and final products. It is also suggested that\nit might be more reasonable to describe the density dependence of the symmetry\nenergy coefficient by the $C_{sym}(\\rho/\\rho_{0})\\approx\nC_{1}(\\rho/\\rho_{0})^{\\gamma_{soft}} + C_{2}(\\rho/\\rho_{0})^{\\gamma_{stiff}}$\nwith $\\gamma_{soft}\\leq 1$, $\\gamma_{stiff}\\geq 1$ and $C_{1}, C_{2}$ constant\nparameters.",
"arxiv_id": "nucl-th/0601079",
"authors": [
"W. D. Tian",
"Y. G. Ma",
"X. Z. Cai",
"D. Q. Fang",
"W. Guo",
"C. W. Ma",
"G. H. Liu",
"W. Q. Shen",
"Y. Shi",
"H. W. Wang",
"K. Wang",
"W. Xu",
"T. Z. Yan"
],
"categories": [
"nucl-th",
"nucl-ex"
],
"doi": "10.1142/S0218301308010714",
"journal_ref": "Int.J.Mod.Phys.E17:1705-1719,2008",
"title": "Dynamical and sequential decay effects on isoscaling and density dependence of the symmetry energy",
"url": "https://arxiv.org/abs/nucl-th/0601079"
},
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