Experimental investigation of a linear-chain structure in the nucleus 14C
| Title: | Experimental investigation of a linear-chain structure in the nucleus 14C |
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| Authors: | 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. |
| Publication Year: | 2016 |
| Collection: | Nuclear Experiment Nuclear Theory |
| Subject Terms: | Nuclear Experiment, Nuclear Theory |
| More Details: | 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 {\alpha}-cluster states in the radioactive 14C nucleus. Using the 10Be+{\alpha} 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. Comment: 15 pages, 3 figures |
| Document Type: | Working Paper |
| DOI: | 10.1016/j.physletb.2016.12.050 |
| Access URL: | http://arxiv.org/abs/1610.06296 |
| Accession Number: | edsarx.1610.06296 |
| Database: | arXiv |
| DOI: | 10.1016/j.physletb.2016.12.050 |
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