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arXiv · 2010.05720

Assessing the impact of valence sd neutrons and protons on fusion

Varinderjit Singh·J. Vadas·T. K. Steinbach·B. B. Wiggins·S. Hudan·R. T. deSouza
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Abstract

Experimental above-barrier fusion cross-sections for $^{17}$F + $^{12}$C are compared to the fusion excitation functions for $^{16,18}$O, $^{19}$F, and $^{20}$Ne ions on a carbon target. In comparing the different systems both the differing static size of the incident ions and changes in fusion barrier are accounted for by examining the reduced fusion cross-section. Remaining trends of the fusion cross-section above the barrier which reflect the sensitive interplay of the sd protons and neutrons are observed. The experimental data are also compared to both a widely-used analytical model of near-barrier fusion, as well as a time-dependent Hartree-Fock model. Both models fail to describe the trends observed.

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Varinderjit Singh, J. Vadas, T. K. Steinbach, B. B. Wiggins, S. Hudan, R. T. deSouza. 2021-03-03. Assessing the impact of valence sd neutrons and protons on fusion. https://doi.org/10.1103/physrevc.103.064606

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