Abstract
Above-barrier fusion cross sections for an isotopic chain of oxygen isotopes with A=16-19 incident on a C12 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 O19 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.
| Original language | English |
|---|---|
| Article number | 061601 |
| Journal | Physical Review C |
| Volume | 101 |
| Issue number | 6 |
| DOIs | |
| State | Published - Jun 2020 |
| Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2020 American Physical Society.
Funding
This work was supported by the U.S. Department of Energy under Grant No. DE-FG02-88ER-40404 (Indiana University) and No. DE-SC0013847 (Vanderbilt University). C.J.H. is supported in part by U.S. DOE Grants No. DE-FG02-87ER40365 and No. DE-SC0018083. Z.L. gratefully acknowledges support from National Science Foundation under Grant No. PHY-1613708 (Arizona State University).
| Funders | Funder number |
|---|---|
| National Science Foundation | PHY-1613708 |
| U.S. Department of Energy | DE-SC0018083, DE-FG02-88ER-40404, DE-FG02-87ER40365 |
| Vanderbilt University | |
| Indiana University | DE-SC0013847 |
| Arizona State University |
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