Channel coupling effect and important role of imaginary part of coupling potential for high-energy heavy-ion scatterings

Abstract

The recent works by the present authors and their collaborator predicted that the real part of heavy-ion optical potentials changes its character from attraction to repulsion around the incident energy per nucleon $E=$ 200 -- 300 MeV/u on the basis of the complex $G$-matrix interaction and the double-folding model (DFM) and revealed that the three-body force plays an important role there. In the present paper, we have analyzed the energy dependence of the coupling effect with the Microscopic Coupled Channel (MCC) method and its relation to the elastic and inelastic-scattering angular distributions in detail in the case of the ${}^{12}$C + ${}^{12}$C system in the energy range of $E=$ 100 -- 400 MeV/u. The large channel coupling effect is clearly seen in the elastic cross section although the incident energies are enough high. The dynamical polarization potential is derived to investigate the channel coupling effect. Moreover, we analyze the effect of imaginary part of the coupling potential on elastic and inelastic cross sections.

13 pages, 15 figures, accepted in Physical Review C

References in corpus (4)

• A parameter-free optical potential for the heavy-ion elastic scattering proces
• The Brieva-Rook Localization of the Microscopic Nucleon-Nucleus Potential
• Global optical potential for nucleus-nucleus systems from 50 MeV/u to 400 MeV/u
• Repulsive nature of optical potentials for high-energy heavy-ion scattering

Cited by in corpus (5)

• Effects of a chiral three-nucleon force on nucleus-nucleus scattering
• A microscopic approach to ${}^3$He scattering
• Saturation of Nuclear Matter and Roles of Many-Body Forces: nuclear matter in neutron stars probed by nucleus-nucleus scattering
• Systematic study for relation between nuclear structure and reaction in ${}^{10}$Be nucleus
• Investigation of the determination of nuclear deformation using high-energy heavy-ion scattering