Fusion reactions with the one-neutron halo nucleus (15)C.
/ Authors
M. Alcorta, K. Rehm, B. Back, S. Bedoor, P. Bertone, C. Deibel, C. Deibel, B. DiGiovine, H. Esbensen, J. Greene
and 13 more authors
C. Hoffman, C. L. Jiang, J. Lighthall, J. Lighthall, S. Marley, S. Marley, R. Pardo, M. Paul, A. Rogers, C. Ugalde, C. Ugalde, C. Ugalde, A. Wuosmaa
/ Abstract
The structure of (15)C, with an s(1/2) neutron weakly bound to a closed-neutron shell nucleus (14)C, 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 (15)C+(232)Th at energies in the vicinity of the Coulomb barrier and compared it to the yield of the neighboring (14)C+(232)Th system measured in the same experiment. At sub-barrier energies, an enhancement of the fusion yield by factors of 2-5 was observed for (15)C, while the cross sections for (14)C match the trends measured for (12,13)C.
Journal: Physical review letters