The structure of C15, with an s1/2 neutron weakly bound to a closed-neutron shell nucleus C14, makes it a prime candidate for a one-neutron halo nucleus. We have for the first time studied the cross section for the fusion-fission reaction C15+Th232 at energies in the vicinity of the Coulomb barrier and compared it to the yield of the neighboring C14+Th232 system measured in the same experiment. At sub-barrier energies, an enhancement of the fusion yield by factors of 2-5 was observed for C15, while the cross sections for C14 match the trends measured for C12,13. © 2011 American Physical Society.
Publication Source (Journal or Book title)
Physical Review Letters
Alcorta, M., Rehm, K., Back, B., Bedoor, S., Bertone, P., Deibel, C., Digiovine, B., Esbensen, H., Greene, J., Hoffmann, C., Jiang, C., Lighthall, J., Marley, S., Pardo, R., Paul, M., Rogers, A., Ugalde, C., & Wuosmaa, A. (2011). Fusion reactions with the one-neutron halo nucleus C15. Physical Review Letters, 106 (17) https://doi.org/10.1103/PhysRevLett.106.172701