K-mixing in the doubly mid-shell nuclide 170Dy and the role of vibrational degeneracy | Zendy

P.-A. Söderström | Zendy; P. M. Walker | Zendy; J. Wu | Zendy; H. L. Liu | Zendy; P. H. Regan | Zendy; H. Watanabe | Zendy; P. Doornenbal | Zendy; Z. Korkulu | Zendy; Pilsoo Lee | Zendy; J.J. Liu | Zendy; G. Lorusso | Zendy; S. Nishimura | Zendy; V. H. Phong | Zendy; T. Sumikama | Zendy; F. R. Xu | Zendy; A. Yagi | Zendy; Guang-Xin Zhang | Zendy; D. S. Ahn | Zendy; T. Alharbi | Zendy; H. Baba | Zendy; F. Browne | Zendy; A. M. Bruce | Zendy; R. Carroll | Zendy; K. Y. Chae | Zendy; Zs. Dombrádi | Zendy; A. Estradé | Zendy; N. Fukuda | Zendy; C. J. Griffin | Zendy; E. Ideguchi | Zendy; N. Inabe | Zendy; T. Isobe | Zendy; H. Kanaoka | Zendy; S. Kanaya | Zendy; I. Kojouharov | Zendy; F. G. Kondev | Zendy; T. Kubo | Zendy; S. Kubono | Zendy; N. Kurz | Zendy; I. Kuti | Zendy; S. Lalkovski | Zendy; G. J. Lane | Zendy; E.J. Lee | Zendy; C. S. Lee | Zendy; G. Lotay | Zendy; C.-B. Moon | Zendy; I. Nishizuka | Zendy; Cristiiță | Zendy; A. Odahara | Zendy; Z. Patel | Zendy; Zs. Podolyák | Zendy; O. J. Roberts | Zendy; H. Sakuraï | Zendy; H. Schaffner | Zendy; C. Shand | Zendy; Hiroaki Suzuki | Zendy; H. Takeda | Zendy; S. Terashima | Zendy; Zs. Vajta | Zendy; J. J. ValienteDobón | Zendy; Z. Y. Xu | Zendy

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K-mixing in the doubly mid-shell nuclide 170Dy and the role of vibrational degeneracy

Author(s) -

P.-A. Söderström,

P. M. Walker,

J. Wu,

H. L. Liu,

P. H. Regan,

H. Watanabe,

P. Doornenbal,

Z. Korkulu,

Pilsoo Lee,

J.J. Liu,

G. Lorusso,

S. Nishimura,

V. H. Phong,

T. Sumikama,

F. R. Xu,

A. Yagi,

Guang-Xin Zhang,

D. S. Ahn,

T. Alharbi,

H. Baba,

F. Browne,

A. M. Bruce,

R. Carroll,

K. Y. Chae,

Zs. Dombrádi,

A. Estradé,

N. Fukuda,

C. J. Griffin,

E. Ideguchi,

N. Inabe,

T. Isobe,

H. Kanaoka,

S. Kanaya,

I. Kojouharov,

F. G. Kondev,

T. Kubo,

S. Kubono,

N. Kurz,

I. Kuti,

S. Lalkovski,

G. J. Lane,

E.J. Lee,

C. S. Lee,

G. Lotay,

C.-B. Moon,

I. Nishizuka,

Cristiiță,

A. Odahara,

Z. Patel,

Zs. Podolyák,

O. J. Roberts,

H. Sakuraï,

H. Schaffner,

C. Shand,

Hiroaki Suzuki,

H. Takeda,

S. Terashima,

Zs. Vajta,

J. J. ValienteDobón,

Z. Y. Xu

Publication year - 2016

Publication title -

physics letters b

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.093

H-Index - 283

eISSN - 1873-2445

pISSN - 0370-2693

DOI - 10.1016/j.physletb.2016.09.058

Subject(s) - physics , yrast , atomic physics , parity (physics) , ground state , nucleus , excitation , degeneracy (biology) , excited state , quantum mechanics , bioinformatics , biology , microbiology and biotechnology

A detailed study of the structure of the doubly mid-shell nucleus Dy 104 1 66 170 has been carried out, following isomeric and β decay. We have measured the yrast band up to the spin-parity J π = 6 + state, the K = 2 γ-vibration band up to the 5 + state, a low-lying negative-parity band based on a 2 − state that could be a candidate for the lowest energy octupole vibration state within this nucleus, and a candidate for the K π = 6 + two quasi-particle isomer. This state was determined to have an excitation energy of 1643.91(23) keV and a half life of 0.99(4) μs, with a reduced hindrance for its decay to the ground-state band an order of magnitude lower than predicted by N p N n systematics. This is interpreted as being due to γ-vibrational mixing from a near degeneracy of the isomer and the 6 + state of the γ band. Furthermore, the parent nucleus 170Tb has been determined to have a half-life of 0.91 ( − 13 + 18 ) s with a possible spin-parity of 2 − .

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