Publications

Li-6,Li-7+Al-27 reactions close to and below the Coulomb barrier

Author(s)
J. Kühtreiber, P. Hille, O. Forstner, H. Friedmann, A. Pavlik, A. Priller
Abstract

The reactions Li-6,Li-7+Al-27 were compared with the reactions O-17,O-18+O-16 which form the same compound nuclei S-33,S-34. Cross-section data for the reactions Li-6,Li-7+Al-27 were derived from experimentally determined gamma-ray production cross sections for transitions in several residual nuclei. For the reactions O-17,O-18+O-16 experimental results from the literature were used. It could be shown that the weakly bound projectiles Li-6,Li-7 undergo not only fusion processes, but also breakup reactions quite in contrast to the tightly bound projectiles O-18 and O-17, respectively. Especially below the Coulomb barrier such direct reactions play an important role in competition to complete fusion. Calculations based on the statistical model agree well with the available data for O-17,O-18+O-16, but failed to represent the behavior of the experimentally determined production cross sections for the evaporation residues in the reactions Li-6,Li-7+Al-27. But coupled-channel codes and calculations based on a nucleus-nucleus proximity potential are able to reproduce the energy dependence of the complete fusion cross sections.

Organisation(s)
Isotope Physics
Journal
Physical Review C
Volume
103
No. of pages
8
ISSN
2469-9985
DOI
https://doi.org/10.1103/PhysRevC.103.064605
Publication date
06-2021
Peer reviewed
Yes
Austrian Fields of Science 2012
103014 Nuclear physics
Keywords
Portal url
https://ucris.univie.ac.at/portal/en/publications/li6li7al27-reactions-close-to-and-below-the-coulomb-barrier(79612c1e-8f7e-41b2-9231-0a9b71ff4c0e).html