Hindrance of heavy-ion fusion due to nuclear incompressibility

Abstract

We propose a new mechanism to explain the unexpected steep falloff of fusion cross sections at energies far below the Coulomb barrier. The saturation properties of nuclear matter are causing a hindrance to large overlap of the reacting nuclei and consequently a sensitive change of the nuclear potential inside the barrier. We report in this letter a good agreement with the data of coupled-channels calculation for the {64}Ni+{64}Ni combination using the double-folding potential with M3Y-Reid effective N-N forces supplemented with a repulsive core that reproduces the nuclear incompressibility for total overlap.

4 pages, 3 figures

Cited by in corpus (28)

• Signature of Shallow Potentials in Deep Sub-barrier Fusion Reactions
• Energy dependence of nucleus-nucleus potential close to the Coulomb barrier
• The 12C + 12C reaction and the impact on nucleosynthesis in massive stars
• How the Pauli exclusion principle affects fusion of atomic nuclei
• Recent experimental results in sub- and near-barrier heavy ion fusion reactions
• Hindrance of ^{16}O+^{208}Pb fusion at extreme sub-barrier energies
• Microscopic sub-barrier fusion calculations for the neutron star crust
• Microscopic study of Ca$+$Ca fusion
• Coupled-channels calculations for nuclear reactions: from exotic nuclei to superheavy elements
• Density-constrained time-dependent Hartree-Fock calculation of ${}^{16}$O+${}^{208}$Pb fusion cross sections
• ${}^{64}$Ni+${}^{64}$Ni fusion reaction calculated with the density-constrained time-dependent Hartree-Fock formalism
• Coupled-channels calculations of ${}^{16}$O+${}^{16}$O fusion
• Potential inversion with subbarrier fusion data revisited
• A new ${}^{12}$C + ${}^{12}$C nuclear reaction rate: impact on stellar evolution
• Dynamical effects in fusion with exotic nuclei
• Coupled-channels density-matrix approach to low-energy nuclear collision dynamics: A technique for quantifying quantum decoherence effects on reaction observables
• Pauli energy contribution to nucleus-nucleus interaction
• Absence of decoherence in the complex potential approach to nuclear scattering
• Challenges in description of heavy-ion collisions with microscopic time-dependent approaches
• Potential roots of the deep sub-barrier heavy-ion fusion hindrance phenomenon
• Influence of the Pauli exclusion principle on the alpha decay
• Nuclear incompressibility and its enduring impact on fusion cross-section
• Effect of nuclear matter incompressibility on the 16O+208Pb system
• Fusion of 16O+165Ho at deep sub-barrier energies
• Effect of Pauli repulsion and transfer on fusion
• Elastic scatering cross-sections obtained on the basis of the potential of the modified Thomas-Fermi method and taking the core into account
• Nuclear astrophysics
• Comparative folding-model study of low-energy elastic scattering and fusion of the ${}^{12}$C+${}^{12}$C and ${}^{16}$O+${}^{16}$O systems