Structural evolution in the neutron-rich Nuclei Zr106 and Zr108

T. Sumikama, K. Yoshinaga, H. Watanabe, S. Nishimura, Y. Miyashita, K. Yamaguchi, K. Sugimoto, J. Chiba, Z. Li, H. Baba, J. S. Berryman, N. Blasi, A. Bracco, F. Camera, P. Doornenbal, S. Go, T. Hashimoto, S. Hayakawa, C. Hinke, E. IdeguchiT. Isobe, Y. Ito, D. G. Jenkins, Y. Kawada, N. Kobayashi, Y. Kondo, R. Krücken, S. Kubono, G. Lorusso, T. Nakano, M. Kurata-Nishimura, A. Odahara, H. J. Ong, S. Ota, Zs Podolyák, H. Sakurai, H. Scheit, K. Steiger, D. Steppenbeck, S. Takano, A. Takashima, K. Tajiri, T. Teranishi, Y. Wakabayashi, P. M. Walker, O. Wieland, H. Yamaguchi

研究成果: Article査読

56 被引用数 (Scopus)

抄録

The low-lying states in Zr106 and Zr108 have been investigated by means of β-γ and isomer spectroscopy at the radioactive isotope beam factory (RIBF), respectively. A new isomer with a half-life of 620±150ns has been identified in Zr108. For the sequence of even-even Zr isotopes, the excitation energies of the first 2+ states reach a minimum at N=64 and gradually increase as the neutron number increases up to N=68, suggesting a deformed subshell closure at N=64. The deformed ground state of Zr108 indicates that a spherical subshell gap predicted at N=70 is not large enough to change the ground state of Zr108 to the spherical shape. The possibility of a tetrahedral shape isomer in Zr108 is also discussed.

本文言語English
論文番号202501
ジャーナルPhysical review letters
106
20
DOI
出版ステータスPublished - 2011 5 16
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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