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Coexistence of cluster and shell-model aspects in nuclear systems

Frontiers of physics 2018年第6期13卷 89-113页

作者： yoshiko kanada-en'yo Hisashi Horiuchi Department of Physics Kyoto University Kitashirakawa Oiwake-Cho Kyoto 606-8502 Japan Research Center for Nuclear Physics (RCNP) Osaka University Ibaraki Osaka 567-0047 Japan

We discuss cluster phenomena in light nuclei. As examples of typical cluster structures, we first review cluster structures of 12C, 16O, and 20Ne, and then introduce some topics of cluster phenomena in light neutron-rich nuclei such as Be and C isotopes. A particular attention is paid on coexistence of cluster and shell-model aspects.

关键词： cluster nuclear structure

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A new N* resonance as a hadronic molecular state

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Chinese Physics C 2009年第12期33卷 1312-1317页

作者： Daisuke Jido yoshiko kanada-en’yo Yukawa Institute for Theoretical Physics Kyoto University Kyoto 606-8502 Japan

We report our recent work on a hadronic molecule state of the KKN system with I =1/2 and jR = 1/2＋. We assume that the A（1405） resonance and the scalar mesons, f0（980）, ao（980）, are reproduced as quasi-bound states of KN and KK, respectively. Performing non-relativistic three-body calculations with a variational method for this system, we find a quasibound state of the KIlN system around 1910 MeV below the three-body breakup threshold. This state corresponds to a new baryon resonance of N＊ with JP ： 1/2＋. We find also that this resonance has the cluster structure of the two-body bound states keeping their properties as in the isolated two-particle systems. We also briefly discuss another hadronic molecular state composed by two K and one N, which corresponds to a resonance.

关键词： three-body bound state ∧(1405) resonance kaon-nucleon intera^tion variational calculation

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Cluster structures in stable and unstable nuclei

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Nuclear Science and Techniques 2015年第2期26卷 71-74页

作者： yoshiko kanada-en’yo Masaaki Kimura Fumiharu Kobayashi Tadahiro Suhara Yasutaka Taniguchi Yuta yoshida Department of Physics Kyoto University Department of Physics Hokkaido University Department of Physics Niigata University Matsue College of Technology Nihon Institute of Medical Science Moroyama-machiIruma-gunSaitama 350-0435Japan

Cluster structures in light unstable nuclei are discussed. The structures of neutron-rich Be isotopes are theoretically investigated and the molecular orbital bond structure and its role in the vanishing of the neutron magic number N = 8 are discussed. The two-body cluster resonances in highly excited states of neutron-rich Li, Be and B isotopes are predicted theoretically.

关键词：团簇结构不稳定原子核铍同位素丰中子分子轨道高激发态理论预测

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