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arXiv · 1504.00226

Effect of neutron skin thickness on projectile fragmentation

Z. T. Dai·D. Q. Fang·Y. G. Ma·X. G. Cao·G. Q. Zhang·W. Q. Shen
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Abstract

The fragment production in collisions of $^{48,50}$Ca+$^{12}$C at 50 MeV/nucleon are simulated via the Isospin-Dependent Quantum Molecular Dynamics (IQMD) model followed by the {GEMINI code}. {By changing the diffuseness parameter of neutron density distribution to obtain different neutron skin size, the effects of neutron skin thickness ($δ_{np}$) on projectile-like fragments (PLF) are investigated. The sensitivity of isoscaling behavior to neutron skin size is studied, from which it is found that the isoscaling parameter $α$ has a linear dependence on $δ_{np}$. A linear dependence between $δ_{np}$ and the mean $N/Z$ [N(Z) is neutron(proton) number] of PLF is obtained as well.} The results show that thicker neutron skin will lead to smaller {isoscaling parameter} $α$ and N/Z. Therefore, it may be probable to extract information of neutron skin thickness from {isoscaling parameter} $α$ and N/Z.

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Z. T. Dai, D. Q. Fang, Y. G. Ma, X. G. Cao, G. Q. Zhang, W. Q. Shen. 2015-04-01. Effect of neutron skin thickness on projectile fragmentation. https://doi.org/10.1103/physrevc.91.034618

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