Observation of a Heavy Neutron-Halo Nucleus <sup>31</sup>Ne(Current Topics)

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Other Title
  • 重い中性子ハロー核<sup>31</sup>Neの発見(最近の研究から)
  • 重い中性子ハロー核³¹Neの発見
  • オモイ チュウセイシ ハローカク ³ ¹ Ne ノ ハッケン

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Abstract

The neutron halo is a weakly-bound exotic nuclear state where the valence neutrons are spatially decopuled from a tightly bound core, and has been found in the light neutron-rich nuclei with A (mass number)<20. In this article, the first experimental observation of a halo structure in ^<31>Ne, heavier than such known halo nuclei, is presented. I also discuss characteristic features of Coulomb breakup, which was used in this experiment, and of the observed soft E1 excitation as a unique property of neutron-halo nuclei. The current findings may provide a key to understand structures of heavier nuclei in the limit of stability.

Journal

  • Butsuri

    Butsuri 66 (12), 914-919, 2011-12-05

    The Physical Society of Japan

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