Three-quasiparticle isomers and possible deformation in the transitional nuclide, 195Au

G. D. Dracoulis; G. J. Lane; H. Watanabe; R. O. Hughes; N. Palalani; F. G. Kondev; M. P. Carpenter; R. V.F. Janssens; T. Lauritsen; C. J. Lister; D. Seweryniak; S. Zhu; P. Chowdhury; W. Y. Liang; Y. Shi; F. R. Xu

doi:10.1103/PhysRevC.87.014326

Three-quasiparticle isomers and possible deformation in the transitional nuclide, 195Au

G. D. Dracoulis^*, G. J. Lane, H. Watanabe, R. O. Hughes, N. Palalani, F. G. Kondev, M. P. Carpenter, R. V.F. Janssens, T. Lauritsen, C. J. Lister, D. Seweryniak, S. Zhu, P. Chowdhury, W. Y. Liang, Y. Shi, F. R. Xu

^*Corresponding author for this work

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

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Abstract

Deep-inelastic reactions and γ-ray spectroscopy have been used to study excited states in 195Au. A three-quasiparticle isomer with a mean-life of 18.6(3) μs has been assigned at 2461+Δ keV, with decays into newly identified structures. Possible configurations for the isomer are discussed including a Jπ =31/2^- intrinsic state produced by coupling the 11/2^-[505] proton hole to the 10⁺ state obtained from the 9/2⁺[624],11/2⁺[615] two-neutron holes, expected from configuration-constrained potential-energy-surface calculations. Residual interactions are evaluated within a semi-empirical shell model basis. New lifetime information is also obtained for the 21/2⁺ and 25/2 ⁺ states at 1813 and 1980 keV. The relationship between these and other newly identified states and the negative-parity states in the even-even neighbors is discussed.

Original language	English
Article number	014326
Journal	Physical Review C - Nuclear Physics
Volume	87
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevC.87.014326
Publication status	Published - 22 Jan 2013

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Dracoulis, G. D., Lane, G. J., Watanabe, H., Hughes, R. O., Palalani, N., Kondev, F. G., Carpenter, M. P., Janssens, R. V. F., Lauritsen, T., Lister, C. J., Seweryniak, D., Zhu, S., Chowdhury, P., Liang, W. Y., Shi, Y., & Xu, F. R. (2013). Three-quasiparticle isomers and possible deformation in the transitional nuclide, 195Au. Physical Review C - Nuclear Physics, 87(1), Article 014326. https://doi.org/10.1103/PhysRevC.87.014326

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title = "Three-quasiparticle isomers and possible deformation in the transitional nuclide, 195Au",

abstract = "Deep-inelastic reactions and γ-ray spectroscopy have been used to study excited states in 195Au. A three-quasiparticle isomer with a mean-life of 18.6(3) μs has been assigned at 2461+Δ keV, with decays into newly identified structures. Possible configurations for the isomer are discussed including a Jπ =31/2- intrinsic state produced by coupling the 11/2-[505] proton hole to the 10+ state obtained from the 9/2+[624],11/2+[615] two-neutron holes, expected from configuration-constrained potential-energy-surface calculations. Residual interactions are evaluated within a semi-empirical shell model basis. New lifetime information is also obtained for the 21/2+ and 25/2 + states at 1813 and 1980 keV. The relationship between these and other newly identified states and the negative-parity states in the even-even neighbors is discussed.",

author = "Dracoulis, {G. D.} and Lane, {G. J.} and H. Watanabe and Hughes, {R. O.} and N. Palalani and Kondev, {F. G.} and Carpenter, {M. P.} and Janssens, {R. V.F.} and T. Lauritsen and Lister, {C. J.} and D. Seweryniak and S. Zhu and P. Chowdhury and Liang, {W. Y.} and Y. Shi and Xu, {F. R.}",

year = "2013",

month = jan,

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doi = "10.1103/PhysRevC.87.014326",

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volume = "87",

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Dracoulis, GD, Lane, GJ, Watanabe, H, Hughes, RO, Palalani, N, Kondev, FG, Carpenter, MP, Janssens, RVF, Lauritsen, T, Lister, CJ, Seweryniak, D, Zhu, S, Chowdhury, P, Liang, WY, Shi, Y & Xu, FR 2013, 'Three-quasiparticle isomers and possible deformation in the transitional nuclide, 195Au', Physical Review C - Nuclear Physics, vol. 87, no. 1, 014326. https://doi.org/10.1103/PhysRevC.87.014326

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T1 - Three-quasiparticle isomers and possible deformation in the transitional nuclide, 195Au

AU - Dracoulis, G. D.

AU - Lane, G. J.

AU - Watanabe, H.

AU - Hughes, R. O.

AU - Palalani, N.

AU - Kondev, F. G.

AU - Carpenter, M. P.

AU - Janssens, R. V.F.

AU - Lauritsen, T.

AU - Lister, C. J.

AU - Seweryniak, D.

AU - Zhu, S.

AU - Chowdhury, P.

AU - Liang, W. Y.

AU - Shi, Y.

AU - Xu, F. R.

PY - 2013/1/22

Y1 - 2013/1/22

N2 - Deep-inelastic reactions and γ-ray spectroscopy have been used to study excited states in 195Au. A three-quasiparticle isomer with a mean-life of 18.6(3) μs has been assigned at 2461+Δ keV, with decays into newly identified structures. Possible configurations for the isomer are discussed including a Jπ =31/2- intrinsic state produced by coupling the 11/2-[505] proton hole to the 10+ state obtained from the 9/2+[624],11/2+[615] two-neutron holes, expected from configuration-constrained potential-energy-surface calculations. Residual interactions are evaluated within a semi-empirical shell model basis. New lifetime information is also obtained for the 21/2+ and 25/2 + states at 1813 and 1980 keV. The relationship between these and other newly identified states and the negative-parity states in the even-even neighbors is discussed.

AB - Deep-inelastic reactions and γ-ray spectroscopy have been used to study excited states in 195Au. A three-quasiparticle isomer with a mean-life of 18.6(3) μs has been assigned at 2461+Δ keV, with decays into newly identified structures. Possible configurations for the isomer are discussed including a Jπ =31/2- intrinsic state produced by coupling the 11/2-[505] proton hole to the 10+ state obtained from the 9/2+[624],11/2+[615] two-neutron holes, expected from configuration-constrained potential-energy-surface calculations. Residual interactions are evaluated within a semi-empirical shell model basis. New lifetime information is also obtained for the 21/2+ and 25/2 + states at 1813 and 1980 keV. The relationship between these and other newly identified states and the negative-parity states in the even-even neighbors is discussed.

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JF - Physical Review C - Nuclear Physics

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ER -

Three-quasiparticle isomers and possible deformation in the transitional nuclide, 195Au

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