Experimental investigation of a linear-chain structure in the nucleus 14 C
Elsevier, 2016
Online
academicJournal
Zugriff:
It is a well-known fact that a cluster of nucleons can be formed in the interior of an atomic nucleus, and such clusters may occupy molecular-like orbitals, showing characteristics similar to normal molecules consisting of atoms. Chemical molecules having a linear alignment are commonly seen in nature, such as carbon dioxide. A similar linear alignment of the nuclear clusters, referred to as linear-chain cluster state (LCCS), has been studied since the 1950s, however, up to now there is no clear experimental evidence demonstrating the existence of such a state. Recently, it was proposed that an excess of neutrons may offer just such a stabilizing mechanism, revitalizing interest in the nuclear LCCS, specifically with predictions for their emergence in neutron-rich carbon isotopes. Here we present the experimental observation of α -cluster states in the radioactive 14 C nucleus. Using the Be10+α resonant scattering method with a radioactive beam, we observed a series of levels which completely agree with theoretically predicted levels having an explicit linear-chain cluster configuration. We regard this as the first strong indication of the linear-chain clustered nucleus.
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Experimental investigation of a linear-chain structure in the nucleus 14 C
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Autor/in / Beteiligte Person: | Yamaguchi, H. ; Kahl, D. ; Hayakawa, S. ; Sakaguchi, Y. ; Abe, K. ; Nakao, T. ; Suhara, T. ; Iwasa, N. ; Kim, A. ; Kim, D.H. ; Cha, S.M. ; Kwag, M.S. ; Lee, J.H. ; Lee, E.J. ; Chae, K.Y. ; Wakabayashi, Y. ; Imai, N. ; Kitamura, N. ; Lee, P. ; Moon, J.Y. ; Lee, K.B. ; Akers, C. ; Jung, H.S. ; Duy, N.N. ; Khiem, L.H. ; Lee, C.S. |
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Veröffentlichung: | Elsevier, 2016 |
Medientyp: | academicJournal |
DOI: | 10.1016/j.physletb.2016.12.050 |
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