Shape evolution in 116,118Ru: Triaxiality and transition between the O(6) and U(5) dynamical symmetries

P. A. Söderström; G. Lorusso; H. Watanabe; S. Nishimura; P. Doornenbal; G. Thiamova; F. Browne; G. Gey; H. S. Jung; T. Sumikama; J. Taprogge; Zs Vajta; J. Wu; Z. Y. Xu; H. Baba; G. Benzoni; K. Y. Chae; F. C.L. Crespi; N. Fukuda; R. Gernhäuser; N. Inabe; T. Isobe; A. Jungclaus; D. Kameda; G. D. Kim; Y. K. Kim; I. Kojouharov; F. G. Kondev; T. Kubo; N. Kurz; Y. K. Kwon; G. J. Lane; Z. Li; A. Montaner-Pizá; K. Moschner; F. Naqvi; M. Niikura; H. Nishibata; A. Odahara; R. Orlandi; Z. Patel; Zs Podolyák; H. Sakurai; H. Schaffner; G. S. Simpson; K. Steiger; H. Suzuki; H. Takeda; A. Wendt; A. Yagi; K. Yoshinaga

doi:10.1103/PhysRevC.88.024301

Shape evolution in 116^,118Ru: Triaxiality and transition between the O(6) and U(5) dynamical symmetries

P. A. Söderström^*
, G. Lorusso
, H. Watanabe
, S. Nishimura
, P. Doornenbal
, G. Thiamova
, F. Browne
, G. Gey
, H. S. Jung
, T. Sumikama
, J. Taprogge
, Zs Vajta
, J. Wu
, Z. Y. Xu
, H. Baba
, G. Benzoni
, K. Y. Chae
, F. C.L. Crespi
, N. Fukuda
, R. Gernhäuser

N. Inabe, T. Isobe, A. Jungclaus, D. Kameda, G. D. Kim, Y. K. Kim, I. Kojouharov, F. G. Kondev, T. Kubo, N. Kurz, Y. K. Kwon, G. J. Lane, Z. Li, A. Montaner-Pizá, K. Moschner, F. Naqvi, M. Niikura, H. Nishibata, A. Odahara, R. Orlandi, Z. Patel, Zs Podolyák, H. Sakurai, H. Schaffner, G. S. Simpson, K. Steiger, H. Suzuki, H. Takeda, A. Wendt, A. Yagi, K. Yoshinaga

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

25 Citations (Scopus)

Abstract

116Ru and 118Ru have been studied via β-delayed γ-ray spectroscopy of nuclei produced in fragmentation reactions at the Radioactive Ion-Beam Factory (RIBF) facility. Level schemes with positive-parity states up to spin J=6 have been constructed. The results have been discussed in terms of the interacting boson model, the algebraic collective model, and total Routhian surfaces. We conclude that the very neutron-rich nuclei still show many features associated with triaxial γ-soft nuclei, represented by the O(6) symmetry, but are approaching a spherical structure, the U(5) symmetry, with increasing neutron number towards the N=82 shell closure. In 118Ru, hints of a shape transition in the ground state have been observed.

Original language	English
Article number	024301
Journal	Physical Review C - Nuclear Physics
Volume	88
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevC.88.024301
Publication status	Published - 1 Aug 2013

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Söderström, P. A., Lorusso, G., Watanabe, H., Nishimura, S., Doornenbal, P., Thiamova, G., Browne, F., Gey, G., Jung, H. S., Sumikama, T., Taprogge, J., Vajta, Z., Wu, J., Xu, Z. Y., Baba, H., Benzoni, G., Chae, K. Y., Crespi, F. C. L., Fukuda, N., ... Yoshinaga, K. (2013). Shape evolution in 116^,118Ru: Triaxiality and transition between the O(6) and U(5) dynamical symmetries. Physical Review C - Nuclear Physics, 88(2), Article 024301. https://doi.org/10.1103/PhysRevC.88.024301

@article{7584bae96fba4c1baed7c630db780481,

title = "Shape evolution in 116,118Ru: Triaxiality and transition between the O(6) and U(5) dynamical symmetries",

abstract = "116Ru and 118Ru have been studied via β-delayed γ-ray spectroscopy of nuclei produced in fragmentation reactions at the Radioactive Ion-Beam Factory (RIBF) facility. Level schemes with positive-parity states up to spin J=6 have been constructed. The results have been discussed in terms of the interacting boson model, the algebraic collective model, and total Routhian surfaces. We conclude that the very neutron-rich nuclei still show many features associated with triaxial γ-soft nuclei, represented by the O(6) symmetry, but are approaching a spherical structure, the U(5) symmetry, with increasing neutron number towards the N=82 shell closure. In 118Ru, hints of a shape transition in the ground state have been observed.",

author = "S{\"o}derstr{\"o}m, \{P. A.\} and G. Lorusso and H. Watanabe and S. Nishimura and P. Doornenbal and G. Thiamova and F. Browne and G. Gey and Jung, \{H. S.\} and T. Sumikama and J. Taprogge and Zs Vajta and J. Wu and Xu, \{Z. Y.\} and H. Baba and G. Benzoni and Chae, \{K. Y.\} and Crespi, \{F. C.L.\} and N. Fukuda and R. Gernh{\"a}user and N. Inabe and T. Isobe and A. Jungclaus and D. Kameda and Kim, \{G. D.\} and Kim, \{Y. K.\} and I. Kojouharov and Kondev, \{F. G.\} and T. Kubo and N. Kurz and Kwon, \{Y. K.\} and Lane, \{G. J.\} and Z. Li and A. Montaner-Piz{\'a} and K. Moschner and F. Naqvi and M. Niikura and H. Nishibata and A. Odahara and R. Orlandi and Z. Patel and Zs Podoly{\'a}k and H. Sakurai and H. Schaffner and Simpson, \{G. S.\} and K. Steiger and H. Suzuki and H. Takeda and A. Wendt and A. Yagi and K. Yoshinaga",

year = "2013",

month = aug,

day = "1",

doi = "10.1103/PhysRevC.88.024301",

language = "English",

volume = "88",

journal = "Physical Review C - Nuclear Physics",

issn = "0556-2813",

publisher = "American Physical Society",

number = "2",

}

Söderström, PA, Lorusso, G, Watanabe, H, Nishimura, S, Doornenbal, P, Thiamova, G, Browne, F, Gey, G, Jung, HS, Sumikama, T, Taprogge, J, Vajta, Z, Wu, J, Xu, ZY, Baba, H, Benzoni, G, Chae, KY, Crespi, FCL, Fukuda, N, Gernhäuser, R, Inabe, N, Isobe, T, Jungclaus, A, Kameda, D, Kim, GD, Kim, YK, Kojouharov, I, Kondev, FG, Kubo, T, Kurz, N, Kwon, YK, Lane, GJ, Li, Z, Montaner-Pizá, A, Moschner, K, Naqvi, F, Niikura, M, Nishibata, H, Odahara, A, Orlandi, R, Patel, Z, Podolyák, Z, Sakurai, H, Schaffner, H, Simpson, GS, Steiger, K, Suzuki, H, Takeda, H, Wendt, A, Yagi, A & Yoshinaga, K 2013, 'Shape evolution in 116^,118Ru: Triaxiality and transition between the O(6) and U(5) dynamical symmetries', Physical Review C - Nuclear Physics, vol. 88, no. 2, 024301. https://doi.org/10.1103/PhysRevC.88.024301

TY - JOUR

T1 - Shape evolution in 116,118Ru

T2 - Triaxiality and transition between the O(6) and U(5) dynamical symmetries

AU - Söderström, P. A.

AU - Lorusso, G.

AU - Watanabe, H.

AU - Nishimura, S.

AU - Doornenbal, P.

AU - Thiamova, G.

AU - Browne, F.

AU - Gey, G.

AU - Jung, H. S.

AU - Sumikama, T.

AU - Taprogge, J.

AU - Vajta, Zs

AU - Wu, J.

AU - Xu, Z. Y.

AU - Baba, H.

AU - Benzoni, G.

AU - Chae, K. Y.

AU - Crespi, F. C.L.

AU - Fukuda, N.

AU - Gernhäuser, R.

AU - Inabe, N.

AU - Isobe, T.

AU - Jungclaus, A.

AU - Kameda, D.

AU - Kim, G. D.

AU - Kim, Y. K.

AU - Kojouharov, I.

AU - Kondev, F. G.

AU - Kubo, T.

AU - Kurz, N.

AU - Kwon, Y. K.

AU - Lane, G. J.

AU - Li, Z.

AU - Montaner-Pizá, A.

AU - Moschner, K.

AU - Naqvi, F.

AU - Niikura, M.

AU - Nishibata, H.

AU - Odahara, A.

AU - Orlandi, R.

AU - Patel, Z.

AU - Podolyák, Zs

AU - Sakurai, H.

AU - Schaffner, H.

AU - Simpson, G. S.

AU - Steiger, K.

AU - Suzuki, H.

AU - Takeda, H.

AU - Wendt, A.

AU - Yagi, A.

AU - Yoshinaga, K.

PY - 2013/8/1

Y1 - 2013/8/1

N2 - 116Ru and 118Ru have been studied via β-delayed γ-ray spectroscopy of nuclei produced in fragmentation reactions at the Radioactive Ion-Beam Factory (RIBF) facility. Level schemes with positive-parity states up to spin J=6 have been constructed. The results have been discussed in terms of the interacting boson model, the algebraic collective model, and total Routhian surfaces. We conclude that the very neutron-rich nuclei still show many features associated with triaxial γ-soft nuclei, represented by the O(6) symmetry, but are approaching a spherical structure, the U(5) symmetry, with increasing neutron number towards the N=82 shell closure. In 118Ru, hints of a shape transition in the ground state have been observed.

AB - 116Ru and 118Ru have been studied via β-delayed γ-ray spectroscopy of nuclei produced in fragmentation reactions at the Radioactive Ion-Beam Factory (RIBF) facility. Level schemes with positive-parity states up to spin J=6 have been constructed. The results have been discussed in terms of the interacting boson model, the algebraic collective model, and total Routhian surfaces. We conclude that the very neutron-rich nuclei still show many features associated with triaxial γ-soft nuclei, represented by the O(6) symmetry, but are approaching a spherical structure, the U(5) symmetry, with increasing neutron number towards the N=82 shell closure. In 118Ru, hints of a shape transition in the ground state have been observed.

UR - https://www.scopus.com/pages/publications/84883480940

U2 - 10.1103/PhysRevC.88.024301

DO - 10.1103/PhysRevC.88.024301

M3 - Article

SN - 0556-2813

VL - 88

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

IS - 2

M1 - 024301

ER -

Shape evolution in 116^,118Ru: Triaxiality and transition between the O(6) and U(5) dynamical symmetries

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