Effect of neutron skin thickness on projectile fragmentation

Z. T. Dai (代智涛), D. Q. Fang (方德清), Y. G. Ma (马余刚), X. G. Cao (曹喜光), G. Q. Zhang (张国强), and W. Q. Shen (沈文庆)
Phys. Rev. C 91, 034618 – Published 30 March 2015

Abstract

The fragment production in collisions of 48,50Ca+C12 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 sizes, the effects of neutron skin thickness (δnp) on projectile-like fragments (PLFs) 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 δnp. A linear dependence between δnp and the mean N/Z [N (Z) is neutron (proton) number] of the 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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  • Received 13 November 2014
  • Revised 2 February 2015

DOI:https://doi.org/10.1103/PhysRevC.91.034618

©2015 American Physical Society

Authors & Affiliations

Z. T. Dai (代智涛)1,2, D. Q. Fang (方德清)1,*, Y. G. Ma (马余刚)1,3,†, X. G. Cao (曹喜光)1, G. Q. Zhang (张国强)1, and W. Q. Shen (沈文庆)1

  • 1Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
  • 2University of Chinese Academy of Sciences, Beijing 100049, China
  • 3Shanghai Tech University, Shanghai 200031, China

  • *dqfang@sinap.ac.cn
  • ygma@sinap.ac.cn

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Issue

Vol. 91, Iss. 3 — March 2015

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