Structure of neutron-rich tungsten nuclei and evidence for a 10- isomer in W190

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

doi:10.1103/PhysRevC.82.051304

Structure of neutron-rich tungsten nuclei and evidence for a 10^- isomer in W190

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

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Abstract

Isomers in the neutron-rich nucleus W190 have been characterized. A 10 ^- state from the 9/2^-[505] 11/2⁺[615] two-neutron configuration with a 240-μs lifetime decays via a K-allowed, 97-keV, M2 transition to an 8⁺ state with a 160-ns lifetime from the 9/2^-[505] 7/2^-[503] neutron configuration. New states have also been identified in W188, including a Kπ=8^-, 158-ns isomer from the 9/2^-[614] 7/2⁺[404] two-proton configuration. The K hindrance is observed to decrease with increasing neutron number, consistent with a trend toward increasing triaxial softness.

Original language	English
Article number	051304
Journal	Physical Review C - Nuclear Physics
Volume	82
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevC.82.051304
Publication status	Published - 29 Nov 2010

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Lane, G. J., Dracoulis, G. D., Kondev, F. G., Hughes, R. O., Watanabe, H., Byrne, A. P., Carpenter, M. P., Chiara, C. J., Chowdhury, P., Janssens, R. V. F., Lauritsen, T., Lister, C. J., McCutchan, E. A., Seweryniak, D., Stefanescu, I., & Zhu, S. (2010). Structure of neutron-rich tungsten nuclei and evidence for a 10^- isomer in W190. Physical Review C - Nuclear Physics, 82(5), Article 051304. https://doi.org/10.1103/PhysRevC.82.051304

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title = "Structure of neutron-rich tungsten nuclei and evidence for a 10- isomer in W190",

abstract = "Isomers in the neutron-rich nucleus W190 have been characterized. A 10 - state from the 9/2-[505] 11/2+[615] two-neutron configuration with a 240-μs lifetime decays via a K-allowed, 97-keV, M2 transition to an 8+ state with a 160-ns lifetime from the 9/2-[505] 7/2-[503] neutron configuration. New states have also been identified in W188, including a Kπ=8-, 158-ns isomer from the 9/2-[614] 7/2+[404] two-proton configuration. The K hindrance is observed to decrease with increasing neutron number, consistent with a trend toward increasing triaxial softness.",

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

year = "2010",

month = nov,

day = "29",

doi = "10.1103/PhysRevC.82.051304",

language = "English",

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journal = "Physical Review C - Nuclear Physics",

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publisher = "American Physical Society",

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Lane, GJ, Dracoulis, GD, Kondev, FG, Hughes, RO, Watanabe, H, Byrne, AP, Carpenter, MP, Chiara, CJ, Chowdhury, P, Janssens, RVF, Lauritsen, T, Lister, CJ, McCutchan, EA, Seweryniak, D, Stefanescu, I & Zhu, S 2010, 'Structure of neutron-rich tungsten nuclei and evidence for a 10^- isomer in W190', Physical Review C - Nuclear Physics, vol. 82, no. 5, 051304. https://doi.org/10.1103/PhysRevC.82.051304

TY - JOUR

T1 - Structure of neutron-rich tungsten nuclei and evidence for a 10- isomer in W190

AU - Lane, G. J.

AU - Dracoulis, G. D.

AU - Kondev, F. G.

AU - Hughes, R. O.

AU - Watanabe, H.

AU - Byrne, A. P.

AU - Carpenter, M. P.

AU - Chiara, C. J.

AU - Chowdhury, P.

AU - Janssens, R. V.F.

AU - Lauritsen, T.

AU - Lister, C. J.

AU - McCutchan, E. A.

AU - Seweryniak, D.

AU - Stefanescu, I.

AU - Zhu, S.

PY - 2010/11/29

Y1 - 2010/11/29

N2 - Isomers in the neutron-rich nucleus W190 have been characterized. A 10 - state from the 9/2-[505] 11/2+[615] two-neutron configuration with a 240-μs lifetime decays via a K-allowed, 97-keV, M2 transition to an 8+ state with a 160-ns lifetime from the 9/2-[505] 7/2-[503] neutron configuration. New states have also been identified in W188, including a Kπ=8-, 158-ns isomer from the 9/2-[614] 7/2+[404] two-proton configuration. The K hindrance is observed to decrease with increasing neutron number, consistent with a trend toward increasing triaxial softness.

AB - Isomers in the neutron-rich nucleus W190 have been characterized. A 10 - state from the 9/2-[505] 11/2+[615] two-neutron configuration with a 240-μs lifetime decays via a K-allowed, 97-keV, M2 transition to an 8+ state with a 160-ns lifetime from the 9/2-[505] 7/2-[503] neutron configuration. New states have also been identified in W188, including a Kπ=8-, 158-ns isomer from the 9/2-[614] 7/2+[404] two-proton configuration. The K hindrance is observed to decrease with increasing neutron number, consistent with a trend toward increasing triaxial softness.

UR - https://www.scopus.com/pages/publications/79251485316

U2 - 10.1103/PhysRevC.82.051304

DO - 10.1103/PhysRevC.82.051304

M3 - Article

SN - 0556-2813

VL - 82

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

IS - 5

M1 - 051304

ER -

Structure of neutron-rich tungsten nuclei and evidence for a 10^- isomer in W190

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