Structures in high-energy fusion data

Abstract

Structures observed in heavy-ion fusion cross sections at energies above the Coulomb barrier are interpreted as caused by the penetration of centrifugal barriers that are well-separated in energy. The structures are most pronounced in the fusion of lighter, symmetric systems, where the separation in energy between successive angular momentum barriers is relatively large. It is shown that the structures or peaks can be revealed by plotting the first derivative of the energy weighted cross section. It is also shown how an orbital angular momentum can be assign to the observed peaks by comparing to coupled-channels calculations. This is illustrated by analyzing high-energy fusion data for ${}^{12}$C+${}^{16}$O and ${}^{16}$O+${}^{16}$O, and the possibility of observing similar structures in the fusion of heavier systems is discussed.

22 pager, 12 figures

References in corpus (4)

• Signature of Shallow Potentials in Deep Sub-barrier Fusion Reactions
• Systematics of heavy-ion fusion hindrance at extreme sub-barrier energies
• Effects of mutual excitations in the fusion of carbon isotopes
• Coupled-channels calculations of ${}^{16}$O+${}^{16}$O fusion

Cited by in corpus (13)

• Recent experimental results in sub- and near-barrier heavy ion fusion reactions
• Microscopic study of ${}^{16}$O+${}^{16}$O fusion
• A region of high-spin toroidal isomers
• Confronting measured near and sub-barrier fusion cross-sections for 20O+12C with a microscopic method
• Time-dependent covariant density functional theory in 3D lattice space: benchmark calculation for 16O + 16O reaction
• Reaction Cross Section in Heavy-Ion Collisions
• Oscillations above the barrier in the fusion of 28Si + 28Si
• Nuclear Quantum Many-Body Dynamics: From Collective Vibrations to Heavy-Ion Collisions (2nd edition)
• Spin Quantization in Heavy Ion Collision
• Subbarrier fusion of carbon isotopes: from resonance structure to fusion oscillations
• Pocket resonances in low-energy antineutrons reactions with nuclei
• Mapping from quasi-elastic scattering to fusion reactions
• Influence of additional neutrons on the fusion cross-section beyond the N=8 shell