Probing the isospin dependence of the in-medium nucleon-nucleon cross sections with radioactive beams

Abstract

Within a transport model we search for potential probes of the isospin dependence of the in-medium nucleon-nucleon (NN) cross sections. Traditional measures of the nuclear stopping power are found sensitive to the magnitude but they are ambiguous for determining the isospin dependence of the in-medium NN cross sections. It is shown that isospin tracers, such as the neutron/proton ratio of free nucleons, at backward rapidities/angles in nuclear reactions induced by radioactive beams in inverse kinematics is a sensitive probe of the isospin dependence of the in-medium NN cross sections. At forward rapidities/angles, on the other hand, they are more sensitive to the density dependence of the symmetry energy. Measurements of the rapidity/angular dependence of the isospin transport in nuclear reactions will enable a better understanding of the isospin dependence of in-medium nuclear effective interactions.

arXiv comment19 pages including 7 figures, submitted to Phys. Rev. C

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Cited by in corpus (24)

• Recent Progress and New Challenges in Isospin Physics with Heavy-Ion Reactions
• Nucleon-nucleon cross sections in neutron-rich matter and isospin transport in heavy-ion reactions at intermediate energies
• Nucleon Effective Masses in Neutron-Rich Matter
• The physics of dense hadronic matter and compact stars
• The influence of cluster emission and the symmetry energy on neutron-proton spectral double ratios
• Effect of the symmetry energy on nuclear stopping and its relation to the production of light charged fragments
• Medium modifications of the nucleon-nucleon elastic cross section in neutron-rich intermediate energy HICs
• More on nucleon-nucleon cross sections in symmetric and asymmetric matter
• Probing the Nuclear Symmetry Energy with Heavy-Ion Reactions Induced by Neutron-Rich Nuclei
• Constraining the in-medium nucleon-nucleon cross section from the width of nuclear giant dipole resonance
• Effects of in-medium nucleon-nucleon cross section on collective flow and nuclear stopping in heavy-ion collisions in the Fermi-energy domain
• Systematic study of the system size dependence of global stopping: Role of momentum dependent interactions and symmetry energy
• Influence of charge asymmetry and isospin dependent cross-section on nuclear stopping
• Model dependence of isospin sensitive observables at high densities
• Role of density dependent symmetry energy in nuclear stopping
• Microscopic approach to the nucleon-nucleon effective interaction and nucleon-nucleon scattering in symmetric and isospin-asymmetric nuclear matter
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• An in-medium full-folding model approach to quasielastic (p,n) charge-exchange reactions
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• Determining the density dependence of the nuclear symmetry energy using heavy-ion reactions
• Temperature-dependence of single-particle properties in isospin-symmetric and -asymmetric matter within the Dirac-Brueckner-Hartree-Fock model
• Evolutions of in-medium baryon-baryon scattering cross sections and stiffness of dense nuclear matter from Bayesian analyses of FOPI proton flow excitation functions
• Constraining the Skyrme effective interactions and the neutron skin thickness of nuclei using isospin diffusion data from heavy ion collisions
• Progress Towards Determining the Density Dependence of the Nuclear Symmetry Energy Using Heavy-Ion Reactions