Breakup dynamics of a neutron-halo projectile on heavy target at deep sub-barrier energies

By studying the total fusion and breakup cross-sections in the interaction of the neutron-halo 11 Be projectile on the lead target 208 Pb, it is shown that, even for the neutron-halo projectile, the breakup channel remains the most dominant reaction channel at sub-barrier energies, following a chara...

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Bibliographic Details
Published in:Journal of physics. G, Nuclear and particle physics Nuclear and particle physics, 2024-09, Vol.51 (9), p.95103
Main Authors: Mukeru, B, Sithole, T, Tomio, Lauro
Format: Article
Language:English
Subjects:
berylium-11
breakup dynamics
Coulomb deep-sub-barrier
heavy-target
nucleon-halo
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Summary:By studying the total fusion and breakup cross-sections in the interaction of the neutron-halo 11 Be projectile on the lead target 208 Pb, it is shown that, even for the neutron-halo projectile, the breakup channel remains the most dominant reaction channel at sub-barrier energies, following a characteristic behavior that was also previously verified for the case of the proton-halo projectile 8 B. This feature is found to emanate from the enhancement of the breakup cross-section, due to the continuum–continuum couplings (CCC) coming exclusively from its Coulomb component. We further speculate that the enhancement of the Coulomb breakup cross-section at sub-barrier incident energies by the CCC could be associated with the projectile breaking up on the outgoing trajectory, provided these couplings can be proven to delay the breakup process.
ISSN:0954-3899
1361-6471
DOI:10.1088/1361-6471/ad633b