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

2023/10/10 by S. Hudan, H. Desilets, Hudan, S. +11
Physics and Astronomy · Engineering · #Nuclear Physics and Applications #Nuclear physics research studies #Nuclear reactor physics and engineering

paper · pdf · doi:10.48550/arxiv.2310.06776

Abstract

Fusion enhancement for neutron-rich isotopes of oxygen on carbon nuclei was probed. To measure the fusion cross-section a ²⁰O beam accelerated to E_lab/A=2.7 MeV bombarded the active-target detector MuSIC@Indiana with a fill gas of CH₄. Examination of the average fusion cross-section over the interval 12 MeV ≤E_c.m.≤ 17 MeV for ^16-20O + ¹²C 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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