2016 Fiscal Year Final Research Report
Properties of low-to-medium neutron-rich neutron matter
| Project Area | Nuclear matter in neutron stars investigated by experiments and astronomical observations |
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| Project/Area Number |
24105005
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| Research Category |
Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
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| Allocation Type | Single-year Grants |
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| Review Section |
Science and Engineering
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
下浦 享 東京大学, 理学(系)研究科(研究院), 教授 (10170995)
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| Co-Investigator(Renkei-kenkyūsha) |
Kondo Yosuke 東京工業大学, 理学院, 助教 (00455346)
Teranishi Takashi 九州大学, 理学研究院, 准教授 (10323495)
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| Research Collaborator |
Togano Yasuhiro 立教大学, 理学部, 助教
Kobayashi Nobuyuki 大阪大学, 核物理研究センター, 特任助教
Tostevin J. A. Univ of Surrey, Professor
Hideaki Otsu 理化学研究所, 仁科加速器研究センター, チームリーダー
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| Project Period (FY) |
2012-06-28 – 2017-03-31
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| Keywords | 実験核物理 / 不安定核 / 中性子星 |
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| Outline of Final Research Achievements |
We have studied properties of very neutron-rich nuclear matter in order to elucidate the key properties of neutron star matter. (1)We have studied the pygmy dipole resonance in neutron-rich Ca isotopes using the newly constructed gamma-ray calorimeter. (2)We performed Coulomb breakup experiments of the two-neutron halo nuclei 19C and 19B, where enhanced electric dipole strengths are observed. This suggests dineutron correlation in these nuclei. We have found deformation-driven halo configuration for 31Ne and neighboring nuclei for the first time. (3) We have found evidence of the tetra-neutron state by the double charge exchange reaction. We have successfully measured precisely the mass of 26O, which was found barely unbound with respect to two-neutron emission. We have also successfully measured 28O for the first time. The nuclear interactions and many-body effects clarified by these experiments may shed light on the properties of neutron stars.
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| Free Research Field |
実験核物理学
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