Triton/${}^3$He ratio as an observable for neutron skin thickness

Abstract

Based on the framework of the Isospin-Dependent Quantum Molecular Dynamics (IQMD) model in which the initial neutron and proton densities are sampled according to the droplet model, the correlation between triton-to-${}^3$He yield ratio (R(t/${}^3$He)$=$Yield(t)/Yield(${}^3$He)) and neutron skin thickness (${\delta }_{np}$) in neutron-rich projectile induced reactions is investigated. By changing the diffuseness parameter of neutron density distribution in the droplet model for the projectile to obtain different ${\delta }_{np}$, the relationship between ${\delta }_{np}$ and the corresponding R(t/${}^3$He) in semi-peripheral collisions is obtained. The calculated results show that R(t/${}^3$He) has a strong linear correlation with ${\delta }_{np}$ for neutron-rich ${}^{50}$Ca and ${}^{68}$Ni nuclei. It is suggested that R(t/${}^3$He) could be regarded as a good experimental observable to extract ${\delta }_{np}$ for neutron-rich nuclei because the yields of charged particles triton and ${}^3$He can be measured quite precisely.

7 pages and 6 figures

References in corpus (13)

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Cited by in corpus (10)

• Transport approaches for the Description of Intermediate-Energy Heavy-Ion Collisions
• Beam Energy Dependence of Triton Production and Yield Ratio (${\mathrm{N}}_t\times {\mathrm{N}}_p/{\mathrm{N}}_d^2$) in Au+Au Collisions at RHIC
• Light nuclei production in Au + Au collisions at $\sqrt{s_{NN}}$ = 7.7-80 GeV from UrQMD model
• Neutron Density Distributions of Neutron-Rich Nuclei Studied with the Isobaric Yield Ratio Difference
• Free spectator nucleons in ultracentral relativistic heavy-ion collisions as a probe of neutron skin
• Effect of neutron skin thickness on projectile fragmentation
• Effects of neutron-skin thickness on direct hard photon emission from reactions induced by the neutron-rich projectile ${}^{50}$Ca
• Elimination of influence of neutron-skin size difference of initial colliding nuclei in Pb+Pb collisions
• Investigating the possibility of extracting neutron-skin thickness in nuclei by their collisions at intermediate energies
• Unlocking the initial neutron density distribution from the two-pion HBT correlation function in heavy-ion collisions