Abstract
The present status of fusion reactions involving light (A < 20) radioactive projectiles at energies around the Coulomb barrier (E < 10 MeV per nucleon) is reviewed, emphasizing measurements made within the last decade. Data on elastic scattering (providing total reaction cross section information) and breakup channels for the involved systems, demonstrating the relationship between these and the fusion channel, are also reviewed. Similarities and differences in the behavior of fusion and total reaction cross section data concerning halo nuclei, weakly-bound but less exotic projectiles, and strongly-bound systems are discussed. One difference in the behavior of fusion excitation functions near the Coulomb barrier seems to emerge between neutron-halo and proton-halo systems. The role of charge has been investigated by comparing the fusion excitation functions, properly scaled, for different neutron- and proton-rich systems. Possible physical explanations for the observed differences are also reviewed.
Highlights
The present status of fusion reactions involving light (A < 20) radioactive projectiles at energies around the Coulomb barrier (E < 10 MeV per nucleon) is reviewed, emphasizing measurements made within the last decade
The effects of incomplete fusion (ICF) reactions associated with the capture of the α clusters in either 6Li or 6He by the 166Er nuclei were estimated to be less than 10% as compared with the intensities of the 166Yb γ rays and corrections were made for this process
The results indicate that the total reaction cross sections exhibit rather similar behavior as a function of the reduced energy at higher energy
Summary
Reactions induced by 6He have continued to be a fruitful area of research in the last decade, both because of the neutron-halo nature of this nuclide and the relative ease of producing intense beams of it at energies near to and below the Coulomb barrier. Over 150 articles reporting on fusion, elastic scattering, and breakup reactions, approximately 1/3 of them experimental, have appeared during this period. The experimental papers, and some of the more important theoretical work, are reviewed below
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