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arXiv · 2310.06776

Influence of additional neutrons on the fusion cross-section beyond the N=8 shell

S. Hudan·H. Desilets·Rohit Kumar·R. T. deSouza·C. Ciampi·A. Chbihi·K. W. Brown
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Abstract

Fusion enhancement for neutron-rich isotopes of oxygen on carbon nuclei was probed. To measure the fusion cross-section a $^{20}$O beam accelerated to E$_{lab}$/A=2.7 MeV bombarded the active-target detector MuSIC@Indiana with a fill gas of CH$_4$. Examination of the average fusion cross-section over the interval 12 MeV $\leq$E$_{c.m.}$$\leq$ 17 MeV for $^{16-20}$O + $^{12}$C reveals that while even isotopes of oxygen exhibit essentially the same cross-section, the cross-section for odd isotopes can be either enhanced or suppressed relative to the even A members of the isotopic chain. Theoretical models fail to explain the observed experimental results.

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S. Hudan, H. Desilets, Rohit Kumar, R. T. deSouza, C. Ciampi, A. Chbihi, K. W. Brown. 2023-10-10. Influence of additional neutrons on the fusion cross-section beyond the N=8 shell. https://arxiv.org/abs/2310.06776

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