Interplay of static and dynamic effects in 6He+ 238U Fusion

We investigate the influence of the neutron halo and the breakup channel in 6He + 238U fusion at near-barrier energies. To include static effects of the 2n-halo in 6He nuclei, we use a single-folding potential obtained from an appropriate nucleon-238U interaction and a realistic 6He density. Dynamic...

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Bibliographic Details
Published in:arXiv.org 2003-07
Main Authors: Cardenas, W H Z, Canto, L F, Carlin, N, Donangelo, R, Hussein, M S
Format: Article
Language:English
Subjects:
Breakup
Mathematical analysis
Nuclear cross sections
Nuclei (nuclear physics)
Online Access:Get full text
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Summary:We investigate the influence of the neutron halo and the breakup channel in 6He + 238U fusion at near-barrier energies. To include static effects of the 2n-halo in 6He nuclei, we use a single-folding potential obtained from an appropriate nucleon-238U interaction and a realistic 6He density. Dynamical effects arising from the breakup process are then included through coupled-channel calculations. These calculations suggest that static effects dominate the cross section at energies above the Coulomb barrier, while the sub-barrier fusion cross section appears to be determined by coupling to the breakup channel. This last conclusion is uncertain due to the procedure employed to measure the fusion cross-section.
ISSN:2331-8422
DOI:10.48550/arxiv.0307074