Enhanced dynamics in fusion of neutron-rich oxygen nuclei at above-barrier energies
Abstract
Above-barrier fusion cross sections for an isotopic chain of oxygen isotopes with A =16 -19 incident on a 12C target are presented. Experimental data are compared with both static and dynamical microscopic calculations. These calculations are unable to explain the ≈37 % increase in the average above-barrier fusion cross section observed for 19O as compared to β -stable oxygen isotopes. This result suggests that for neutron-rich nuclei existing time-dependent Hartree-Fock calculations underpredict the role of dynamics at near-barrier energies. High-quality measurement of above-barrier fusion for an isotopic chain of increasingly neutron-rich nuclei provides an effective means to probe this fusion dynamics.
- Publication:
-
Physical Review C
- Pub Date:
- June 2020
- DOI:
- 10.1103/PhysRevC.101.061601
- arXiv:
- arXiv:2004.13627
- Bibcode:
- 2020PhRvC.101f1601H
- Keywords:
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- Nuclear Experiment;
- Nuclear Theory
- E-Print:
- 6 pages, 4 figures