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. Ideguchi; T. 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

doi:10.1103/PhysRevLett.106.202501

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: ジャーナルへの寄稿 › 学術誌 › 査読

57 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	英語
論文番号	202501
ジャーナル	Physical review letters
巻	106
号	20
DOI	https://doi.org/10.1103/PhysRevLett.106.202501
出版ステータス	出版済み - 5月 16 2011
外部発表	はい

!!!All Science Journal Classification (ASJC) codes

物理学および天文学（全般）

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10.1103/PhysRevLett.106.202501

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Sumikama, T., Yoshinaga, K., Watanabe, H., Nishimura, S., Miyashita, Y., Yamaguchi, K., Sugimoto, K., Chiba, J., Li, Z., Baba, H., Berryman, J. S., Blasi, N., Bracco, A., Camera, F., Doornenbal, P., Go, S., Hashimoto, T., Hayakawa, S., Hinke, C., ... Yamaguchi, H. (2011). Structural evolution in the neutron-rich Nuclei Zr106 and Zr108. Physical review letters, 106(20), [202501]. https://doi.org/10.1103/PhysRevLett.106.202501

Sumikama, T, Yoshinaga, K, Watanabe, H, Nishimura, S, Miyashita, Y, Yamaguchi, K, Sugimoto, K, Chiba, J, Li, Z, Baba, H, Berryman, JS, Blasi, N, Bracco, A, Camera, F, Doornenbal, P, Go, S, Hashimoto, T, Hayakawa, S, Hinke, C, Ideguchi, E, Isobe, T, Ito, Y, Jenkins, DG, Kawada, Y, Kobayashi, N, Kondo, Y, Krücken, R, Kubono, S, Lorusso, G, Nakano, T, Kurata-Nishimura, M, Odahara, A, Ong, HJ, Ota, S, Podolyák, Z, Sakurai, H, Scheit, H, Steiger, K, Steppenbeck, D, Takano, S, Takashima, A, Tajiri, K, Teranishi, T, Wakabayashi, Y, Walker, PM, Wieland, O & Yamaguchi, H 2011, 'Structural evolution in the neutron-rich Nuclei Zr106 and Zr108', Physical review letters, vol. 106, no. 20, 202501. https://doi.org/10.1103/PhysRevLett.106.202501

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title = "Structural evolution in the neutron-rich Nuclei Zr106 and Zr108",

abstract = "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.",

author = "T. Sumikama and K. Yoshinaga and H. Watanabe and S. Nishimura and Y. Miyashita and K. Yamaguchi and K. Sugimoto and J. Chiba and Z. Li and H. Baba and Berryman, {J. S.} and N. Blasi and A. Bracco and F. Camera and P. Doornenbal and S. Go and T. Hashimoto and S. Hayakawa and C. Hinke and E. Ideguchi and T. Isobe and Y. Ito and Jenkins, {D. G.} and Y. Kawada and N. Kobayashi and Y. Kondo and R. Kr{\"u}cken and S. Kubono and G. Lorusso and T. Nakano and M. Kurata-Nishimura and A. Odahara and Ong, {H. J.} and S. Ota and Zs Podoly{\'a}k and H. Sakurai and H. Scheit and K. Steiger and D. Steppenbeck and S. Takano and A. Takashima and K. Tajiri and T. Teranishi and Y. Wakabayashi and Walker, {P. M.} and O. Wieland and H. Yamaguchi",

year = "2011",

month = may,

day = "16",

doi = "10.1103/PhysRevLett.106.202501",

language = "English",

volume = "106",

journal = "Physical Review Letters",

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T1 - Structural evolution in the neutron-rich Nuclei Zr106 and Zr108

AU - Sumikama, T.

AU - Yoshinaga, K.

AU - Watanabe, H.

AU - Nishimura, S.

AU - Miyashita, Y.

AU - Yamaguchi, K.

AU - Sugimoto, K.

AU - Chiba, J.

AU - Li, Z.

AU - Baba, H.

AU - Berryman, J. S.

AU - Blasi, N.

AU - Bracco, A.

AU - Camera, F.

AU - Doornenbal, P.

AU - Go, S.

AU - Hashimoto, T.

AU - Hayakawa, S.

AU - Hinke, C.

AU - Ideguchi, E.

AU - Isobe, T.

AU - Ito, Y.

AU - Jenkins, D. G.

AU - Kawada, Y.

AU - Kobayashi, N.

AU - Kondo, Y.

AU - Krücken, R.

AU - Kubono, S.

AU - Lorusso, G.

AU - Nakano, T.

AU - Kurata-Nishimura, M.

AU - Odahara, A.

AU - Ong, H. J.

AU - Ota, S.

AU - Podolyák, Zs

AU - Sakurai, H.

AU - Scheit, H.

AU - Steiger, K.

AU - Steppenbeck, D.

AU - Takano, S.

AU - Takashima, A.

AU - Tajiri, K.

AU - Teranishi, T.

AU - Wakabayashi, Y.

AU - Walker, P. M.

AU - Wieland, O.

AU - Yamaguchi, H.

PY - 2011/5/16

Y1 - 2011/5/16

N2 - 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.

AB - 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.

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U2 - 10.1103/PhysRevLett.106.202501

DO - 10.1103/PhysRevLett.106.202501

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AN - SCOPUS:79960650626

VL - 106

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 20

M1 - 202501

ER -

Structural evolution in the neutron-rich Nuclei Zr106 and Zr108

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!!!All Science Journal Classification (ASJC) codes

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