Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2019, Vol. 30 ›› Issue (3): 43 doi: 10.1007/s41365-019-0572-8


Impact parameter dependence of the yield ratios of light particles as a probe of neutron skin

Ting-Zhi Yan1 • Shan Li1   

  1. 1 School of Energy and Power Engineering, Northeast Electric Power University, Jilin 132012, China
  • Received:2018-11-05 Revised:2018-12-19 Accepted:2019-01-03
  • Contact: Ting-Zhi Yan
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (No. 11405025).
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Ting-Zhi Yan, Shan Li. Impact parameter dependence of the yield ratios of light particles as a probe of neutron skin.Nuclear Science and Techniques, 2019, 30(3): 43     doi: 10.1007/s41365-019-0572-8

Abstract: The yield ratios of neutron/proton (R(n/p)) and 3H=3He (R(t/3He)) with reduced rapidity from 0 to 0.5 are investigated for 50 MeV/u 42;44;46;48;50;52;54;56Ca + 40Ca. This was conducted at whole reduced impact parameters using the isospin-dependent quantum-molecular-dynamics model in which the initial neutron and proton densities are sampled within the Skyrme–Hartree–Fock model, using which the neutron skin thickness (ΔRnp) is determined for different neutron-rich Ca isotopes. The results show that both R(n/p) and R(t/3He) have strong linear correlations with ΔRnp of different Ca isotopic projectiles from five different centralities. It is suggested that R(n/p) and R(t/3He), from the same centrality, could be treated as possible experimental observables to extract the neutron skin or halo thickness for neutron-rich isotopic nuclei, including the nuclei near the neutron drip line.

Key words: Yield ratio, Neutron skin thickness, Isospindependent quantum-molecular-dynamics