Lifetime of the Kπ=8- isomer in the neutron-rich nucleus Er174, and N=106 E1 systematics

G. D. Dracoulis; G. J. Lane; F. G. Kondev; H. Watanabe; D. Seweryniak; S. Zhu; M. P. Carpenter; C. J. Chiara; R. V.F. Janssens; T. Lauritsen; C. J. Lister; E. A. McCutchan; I. Stefanescu

doi:10.1103/PhysRevC.79.061303

Lifetime of the Kπ=8- isomer in the neutron-rich nucleus Er174, and N=106 E1 systematics

G. D. Dracoulis, G. J. Lane, F. G. Kondev, H. Watanabe, D. Seweryniak, S. Zhu, M. P. Carpenter, C. J. Chiara, R. V.F. Janssens, T. Lauritsen, C. J. Lister, E. A. McCutchan, I. Stefanescu

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Abstract

Chopped-beam techniques and γ-ray spectroscopy with Gammasphere have been used to measure the lifetime of the 1112-keV 8- isomeric state in Er174. The value obtained of τ=5.8(4) s corresponds to a reduced hindrance of fν=98 for the 163-keV E1 transition to the 8+ state of the ground-state band, in good agreement with the systematics of the corresponding E1 strengths in the N=106 isotones. The K-mixing in the 8- states is calculated in the context of the particle-rotor model and used to extract the underlying reduced hindrances.

Original language	English
Article number	061303
Journal	Physical Review C - Nuclear Physics
Volume	79
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevC.79.061303
Publication status	Published - 29 Jun 2009

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Dracoulis, G. D., Lane, G. J., Kondev, F. G., Watanabe, H., Seweryniak, D., Zhu, S., Carpenter, M. P., Chiara, C. J., Janssens, R. V. F., Lauritsen, T., Lister, C. J., McCutchan, E. A., & Stefanescu, I. (2009). Lifetime of the Kπ=8- isomer in the neutron-rich nucleus Er174, and N=106 E1 systematics. Physical Review C - Nuclear Physics, 79(6), Article 061303. https://doi.org/10.1103/PhysRevC.79.061303

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title = "Lifetime of the Kπ=8- isomer in the neutron-rich nucleus Er174, and N=106 E1 systematics",

abstract = "Chopped-beam techniques and γ-ray spectroscopy with Gammasphere have been used to measure the lifetime of the 1112-keV 8- isomeric state in Er174. The value obtained of τ=5.8(4) s corresponds to a reduced hindrance of fν=98 for the 163-keV E1 transition to the 8+ state of the ground-state band, in good agreement with the systematics of the corresponding E1 strengths in the N=106 isotones. The K-mixing in the 8- states is calculated in the context of the particle-rotor model and used to extract the underlying reduced hindrances.",

author = "Dracoulis, {G. D.} and Lane, {G. J.} and Kondev, {F. G.} and H. Watanabe and D. Seweryniak and S. Zhu and Carpenter, {M. P.} and Chiara, {C. J.} and Janssens, {R. V.F.} and T. Lauritsen and Lister, {C. J.} and McCutchan, {E. A.} and I. Stefanescu",

year = "2009",

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day = "29",

doi = "10.1103/PhysRevC.79.061303",

language = "English",

volume = "79",

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Dracoulis, GD, Lane, GJ, Kondev, FG, Watanabe, H, Seweryniak, D, Zhu, S, Carpenter, MP, Chiara, CJ, Janssens, RVF, Lauritsen, T, Lister, CJ, McCutchan, EA & Stefanescu, I 2009, 'Lifetime of the Kπ=8- isomer in the neutron-rich nucleus Er174, and N=106 E1 systematics', Physical Review C - Nuclear Physics, vol. 79, no. 6, 061303. https://doi.org/10.1103/PhysRevC.79.061303

TY - JOUR

T1 - Lifetime of the Kπ=8- isomer in the neutron-rich nucleus Er174, and N=106 E1 systematics

AU - Dracoulis, G. D.

AU - Lane, G. J.

AU - Kondev, F. G.

AU - Watanabe, H.

AU - Seweryniak, D.

AU - Zhu, S.

AU - Carpenter, M. P.

AU - Chiara, C. J.

AU - Janssens, R. V.F.

AU - Lauritsen, T.

AU - Lister, C. J.

AU - McCutchan, E. A.

AU - Stefanescu, I.

PY - 2009/6/29

Y1 - 2009/6/29

N2 - Chopped-beam techniques and γ-ray spectroscopy with Gammasphere have been used to measure the lifetime of the 1112-keV 8- isomeric state in Er174. The value obtained of τ=5.8(4) s corresponds to a reduced hindrance of fν=98 for the 163-keV E1 transition to the 8+ state of the ground-state band, in good agreement with the systematics of the corresponding E1 strengths in the N=106 isotones. The K-mixing in the 8- states is calculated in the context of the particle-rotor model and used to extract the underlying reduced hindrances.

AB - Chopped-beam techniques and γ-ray spectroscopy with Gammasphere have been used to measure the lifetime of the 1112-keV 8- isomeric state in Er174. The value obtained of τ=5.8(4) s corresponds to a reduced hindrance of fν=98 for the 163-keV E1 transition to the 8+ state of the ground-state band, in good agreement with the systematics of the corresponding E1 strengths in the N=106 isotones. The K-mixing in the 8- states is calculated in the context of the particle-rotor model and used to extract the underlying reduced hindrances.

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U2 - 10.1103/PhysRevC.79.061303

DO - 10.1103/PhysRevC.79.061303

M3 - Article

SN - 0556-2813

VL - 79

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

IS - 6

M1 - 061303

ER -

Lifetime of the Kπ=8- isomer in the neutron-rich nucleus Er174, and N=106 E1 systematics

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