Collective flows of light particles in the Au+Au collision at intermediate energies

Abstract

The Skyrme potential energy density functional is introduced into the Ultrarelativistic Quantum Molecular Dynamics (UrQMD) model and the updated version is applied to studying the directed and elliptic flows of light particles (protons, neutrons, deuterons, tritons, ${}^3$He and ${}^4$He) in ${}^{197}$Au+${}^{197}$Au collisions at beam energies 150, 250 and 400 MeV/nucleon. The results are compared with the recent FOPI experimental data. It is found that the yields and collective flows of light particles can be described quite well. The influence of the equation of state (EoS), medium-modified nucleon-nucleon elastic cross sections (NNECS) and cluster recognition criteria on the directed and elliptic flows is studied in detail. It is found that the flows of light particles are sensitive to the medium-modified NNECS, but not sensitive to the isospin dependent cluster recognition criteria. It seems difficult, however, even with the new data and calculations, to obtain a more accurate constraint on the nuclear incompressibility $K_0$ than the interval 200-260 MeV.

23 pages, 8 figures,revised version accepted for publication in Phys. Rev. C

References in corpus (6)

• Systematics of central heavy ion collisions in the 1A GeV regime
• Elliptic flow and system size dependence of transition energies at intermediate energies
• In-medium NN cross sections determined from stopping and collective flow in intermediate-energy heavy-ion collisions
• UrQMD calculations of two-pion HBT correlations in central Pb-Pb collisions at $\sqrt{s_{NN}}=2.76$ TeV
• Probing in-medium spin-orbit potential with intermediate-energy heavy-ion collisions
• The ASY-EOS experiment at GSI: investigating the symmetry energy at supra-saturation densities

Cited by in corpus (25)

• Results of the ASY-EOS experiment at GSI: The symmetry energy at suprasaturation density
• Feasability of constraining the curvature parameter of the symmetry energy using elliptic flow data
• Progress of Quantum Molecular Dynamics model and its applications in Heavy Ion Collisions
• Determination of the nuclear incompressibility from the rapidity-dependent elliptic flow in heavy-ion collisions at beam energies 0.4\emph{A} - 1.0\emph{A} GeV
• Constraining the high-density nuclear symmetry energy with the transverse-momentum dependent elliptic flow
• Effects of in-medium nucleon-nucleon cross section on collective flow and nuclear stopping in heavy-ion collisions in the Fermi-energy domain
• ${}^3$H/${}^3$He ratio as a probe of the nuclear symmetry energy at sub-saturation densities
• Rapidity distribution of protons from the potential version of UrQMD model and the traditional coalescence afterburner
• Effects of sequential decay on collective flows and nuclear stopping power in heavy-ion collisions at intermediate energies
• Influence of differential elastic nucleon-nucleon cross section on stopping and collective flows in heavy-ion collisions at intermediate energies
• Collective flows of pions in Au+Au collisions at energies 1.0 and 1.5 GeV/nucleon
• The effect of Lorentz-like force on collective flows of K${}^{+}$ in Au+Au collisions at 1.5 GeV/nucleon}{The effect of Lorentz-like force on collective flows of $K^{+}$ in Au+Au collisions at 1.5 GeV/nucleon
• Helium-3 production from Pb+Pb collisions at SPS energies with the UrQMD model and the traditional coalescence afterburner
• The density- and isospin- dependent $\Delta$-formation cross section and its decay width
• Elliptic flow in heavy-ion collisions at intermediate energy: the role of impact parameter, mean field potential, and collision term
• The cumulants of the baryon number from central Au+Au collision at $E_{lab}$= 1.23 GeV$/$nucleon reveal the nuclear mean-field potentials
• Nuclear interactions and net-proton number fluctuations in heavy ion collisions at the SIS18 accelerator
• In-medium $\mbox{NN}\to \mbox{N}Δ$ cross section and its dependence on effective Lagrange parameters in isospin-asymmetric nuclear matter
• High Density with Elliptic Flows
• In-medium nucleon-nucleon elastic cross sections determined from nucleon-induced reaction cross sections data
• Effect of the spin-orbit interaction on flows in heavy-ion collisions at intermediate energies
• An explanation of the elliptic flow difference between proton and anti-proton from the UrQMD model with hadron potentials
• In-medium $\Delta (1232)$ potential, pion production in heavy-ion collisions and the symmetry energy
• Mean-field potential effects in the cumulants of baryons from central Au+Au collision at $E_{lab}$= 1.23 GeV$/$nucleon
• A novel filtering method for generating desired density profiles of colliding nuclei