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25 April 2024

» arxiv » nucl-th/0601067

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Systematic study of isoscaling behavior in projectile fragmentation
D. Q. Fang ; Y. G. Ma ; C. Zhong ; C. W. Ma ; X. Z. Cai ; J. G. Chen ; J. H. Chen ; W. Guo ; G. L. Ma ; W. D. Tian ; K. Wang ; T. Z. Yan ; J. X. Zuo ; W. Q. Shen ;
Date:	23 Jan 2006
Abstract:	The isospin effect and isoscaling behavior in projectile fragmentation have been systematically investigated by a modified statistical abrasion-ablation (SAA) model. The normalized peak differences and reduced isoscaling parameters are found to decrease with ($Z_{ ext{proj}}-Z$)/$Z_{ ext{proj}}$ or the excitation energy per nucleon and have no significant dependence on the size of reaction systems. Assuming a Fermi-gas behavior, the excitation energy dependence of the symmetry energy coefficients are tentatively extracted from $alpha$ and $eta$ which looks consistent with the experimental data. It is pointed out that the reduced isoscaling parameters can be used as an observable to study excitation extent of system and asymmetric nuclear equation of state in heavy ion collisions.
Source:	arXiv, nucl-th/0601067
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