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arXiv · 1104.1169

Fusion reactions with the one-neutron halo nucleus 15C

M. Alcorta·K. E. Rehm·B. B. Back·S. Bedoor·P. F. Bertone·C. M. Deibel·B. DiGiovine·H. Esbensen·J. P. Greene·C. R. Hoffmann·C. L. Jiang·J. C. Lighthall·S. T. Marley·R. C. Pardo·M. Paul·A. M. Rogers·C. Ugalde·A. H. Wuosmaa
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Abstract

The structure of 15C, with an s1/2 neutron weakly bound to a closed-neutron shell nucleus 14C, 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 15C + 232Th at energies in the vicinity of the Coulomb barrier and compared it to the yield of the neighboring 14C + 232Th system measured in the same experiment. At sub-barrier energies, an enhancement of the fusion yield by factors of 2-5 was observed for 15C, while the cross sections for 14C match the trends measured for 12,13C.

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M. Alcorta, K. E. Rehm, B. B. Back, S. Bedoor, P. F. Bertone, C. M. Deibel, B. DiGiovine, H. Esbensen, J. P. Greene, C. R. Hoffmann, C. L. Jiang, J. C. Lighthall, S. T. Marley, R. C. Pardo, M. Paul, A. M. Rogers, C. Ugalde, A. H. Wuosmaa. 2011-04-06. Fusion reactions with the one-neutron halo nucleus 15C. https://doi.org/10.1103/physrevlett.106.172701

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