Fusion reactions with the one-neutron halo nucleus (15)C

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 Coulom...

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Veröffentlicht in:	Physical review letters 2011-04, Vol.106 (17), p.172701-172701
Hauptverfasser:	Alcorta, M, Rehm, K E, Back, B B, Bedoor, S, Bertone, P F, Deibel, C M, DiGiovine, B, Esbensen, H, Greene, J P, Hoffman, C R, Hoffmann, C R, Jiang, C L, Lighthall, J C, Marley, S T, Pardo, R C, Paul, M, Rogers, A M, Ugalde, C, Wuosmaa, A H
Format:	Artikel
Sprache:	eng
Schlagworte:	ACTINIDE NUCLEI ALPHA DECAY RADIOISOTOPES BARYONS BETA DECAY RADIOISOTOPES BETA-MINUS DECAY RADIOISOTOPES CARBON 12 CARBON 13 CARBON 14 CARBON 15 CARBON ISOTOPES COULOMB FIELD CROSS SECTIONS ELECTRIC FIELDS ELEMENTARY PARTICLES EVEN-EVEN NUCLEI EVEN-ODD NUCLEI FERMIONS FUSION YIELD HADRONS HEAVY NUCLEI ISOTOPES LIGHT NUCLEI NEUTRONS NUCLEAR HALOS NUCLEAR PHYSICS AND RADIATION PHYSICS NUCLEAR REACTION YIELD NUCLEAR REACTIONS NUCLEI NUCLEONS NUCLEOSYNTHESIS RADIOISOTOPES SECONDS LIVING RADIOISOTOPES SPONTANEOUS FISSION RADIOISOTOPES STABLE ISOTOPES SYNTHESIS THERMONUCLEAR REACTIONS THORIUM 232 THORIUM ISOTOPES YEARS LIVING RADIOISOTOPES YIELDS
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Zusammenfassung:	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.
ISSN:	0031-9007 1079-7114
DOI:	10.1103/PHYSREVLETT.106.172701