Kinetic approach of light-nuclei production in intermediate-energy heavy-ion collisions

Abstract

We develop a kinetic approach to the production of light nuclei up to mass number $A$ $⩽$ $4$ in intermediate-energy heavy-ion collisions by including them as dynamic degrees of freedom. The conversions between nucleons and light nuclei during the collisions are incorporated dynamically via the breakup of light nuclei by a nucleon and their inverse reactions. We also include the Mott effect on light nuclei, i.e., a light nucleus would no longer be bound if the phase-space density of its surrounding nucleons is too large. With this kinetic approach, we obtain a reasonable description of the measured yields of light nuclei in central Au+Au collisions at energies of $0.25$ - $1.0A\mathrm{GeV}$ by the FOPI collaboration. Our study also indicates that the observed enhancement of the $\alpha$-particle yield at low incident energies can be attributed to a weaker Mott effect on the $\alpha$-particle, which makes it more difficult to dissolve in nuclear medium, as a result of its much larger binding energy.

6 pages, 4 figures

References in corpus (12)

• Neutron and Proton Transverse Emission Ratio Measurements and the Density Dependence of the Asymmetry Term of the Nuclear Equation of State
• Systematics of central heavy ion collisions in the 1A GeV regime
• Probing the Symmetry Energy with the Spectral Pion Ratio
• Appearance of Light Clusters in Post-bounce Evolution of Core-Collapse Supernovae
• Dynamics of clusters and fragments in heavy-ion collisions
• Effective pseudopotential for energy density functionals with higher order derivatives
• Nuclear liquid-gas phase transition with machine learning
• Constraining the in-medium nucleon-nucleon cross section from the width of nuclear giant dipole resonance
• Low density nuclear matter with light clusters in a generalized nonlinear relativistic mean-field model
• Nuclear collective dynamics in the lattice Hamiltonian Vlasov method
• Isoscaling in central Sn+Sn collisions at 270 MeV/u
• Light cluster production in central symmetric heavy-ion reactions from Fermi to GeV energies

Cited by in corpus (10)

• Dynamics of light nuclei produced in the massive transfer reactions
• Elliptic flow of deuterons in ultrarelativistic heavy-ion collisions
• Dynamics of dilute nuclear matter with light clusters and in-medium effects
• Signatures of an $\alpha$ + core structure in ${}^{44}$Ti + ${}^{44}$Ti collisions at $\sqrt{s_{NN}}=5.02$ TeV by a multiphase transport model
• Revisit to the yield ratio of triton and ${}^3$He as an indicator of neutron-rich neck emission
• Production characteristics of light nuclei, hypertritons and $\Omega$-hypernuclei in Pb+Pb collisions at $\sqrt{s_{NN}}=5.02$ TeV
• Constraining neutron-proton effective mass splitting through nuclear giant dipole resonance within transport approach
• Activation of momentum fluctuations in wave packet molecular dynamics: Impacts on momentum distributions of projectilelike fragments
• Alpha clustering in warm and dense nuclear matter from heavy-ion collisions
• Phase-space excluded-volume approach for light clusters in nuclear medium