Anomalous isomeric decays in Lu174 as a probe of K mixing and interactions in deformed nuclei

G. D. Dracoulis; F. G. Kondev; G. J. Lane; A. P. Byrne; T. R. McGoram; T. Kibédi; I. Ahmad; M. P. Carpenter; R. V.F. Janssens; T. Lauritsen; C. J. Lister; D. Seweryniak; P. Chowdhury; S. K. Tandel

doi:10.1103/PhysRevLett.97.122501

Anomalous isomeric decays in Lu174 as a probe of K mixing and interactions in deformed nuclei

G. D. Dracoulis^*, F. G. Kondev, G. J. Lane, A. P. Byrne, T. R. McGoram, T. Kibédi, I. Ahmad, M. P. Carpenter, R. V.F. Janssens, T. Lauritsen, C. J. Lister, D. Seweryniak, P. Chowdhury, S. K. Tandel

^*Corresponding author for this work

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

35 Citations (Scopus)

Abstract

A Kπ=13+, 280 ns four-quasiparticle isomer in the odd-odd nucleus Lu174 has been identified and characterized. The isomer decays to both Kπ=7+ and Kπ=0+ rotational bands obtained from the parallel and antiparallel coupling of the proton 7/2+[404] and neutron 7/2+[633] orbitals. K mixing caused by particle-rotation coupling explains the anomalously fast transition rates to the 7+ band but those to the 0+ band are caused by a chance degeneracy between the isomer and a collective state, allowing the mixing matrix element for a large K difference to be deduced.

Original language	English
Article number	122501
Journal	Physical Review Letters
Volume	97
Issue number	12
DOIs	https://doi.org/10.1103/PhysRevLett.97.122501
Publication status	Published - 2006

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Dracoulis, G. D., Kondev, F. G., Lane, G. J., Byrne, A. P., McGoram, T. R., Kibédi, T., Ahmad, I., Carpenter, M. P., Janssens, R. V. F., Lauritsen, T., Lister, C. J., Seweryniak, D., Chowdhury, P., & Tandel, S. K. (2006). Anomalous isomeric decays in Lu174 as a probe of K mixing and interactions in deformed nuclei. Physical Review Letters, 97(12), Article 122501. https://doi.org/10.1103/PhysRevLett.97.122501

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title = "Anomalous isomeric decays in Lu174 as a probe of K mixing and interactions in deformed nuclei",

abstract = "A Kπ=13+, 280 ns four-quasiparticle isomer in the odd-odd nucleus Lu174 has been identified and characterized. The isomer decays to both Kπ=7+ and Kπ=0+ rotational bands obtained from the parallel and antiparallel coupling of the proton 7/2+[404] and neutron 7/2+[633] orbitals. K mixing caused by particle-rotation coupling explains the anomalously fast transition rates to the 7+ band but those to the 0+ band are caused by a chance degeneracy between the isomer and a collective state, allowing the mixing matrix element for a large K difference to be deduced.",

author = "Dracoulis, {G. D.} and Kondev, {F. G.} and Lane, {G. J.} and Byrne, {A. P.} and McGoram, {T. R.} and T. Kib{\'e}di and I. Ahmad and Carpenter, {M. P.} and Janssens, {R. V.F.} and T. Lauritsen and Lister, {C. J.} and D. Seweryniak and P. Chowdhury and Tandel, {S. K.}",

year = "2006",

doi = "10.1103/PhysRevLett.97.122501",

language = "English",

volume = "97",

journal = "Physical Review Letters",

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Dracoulis, GD, Kondev, FG, Lane, GJ, Byrne, AP, McGoram, TR, Kibédi, T, Ahmad, I, Carpenter, MP, Janssens, RVF, Lauritsen, T, Lister, CJ, Seweryniak, D, Chowdhury, P & Tandel, SK 2006, 'Anomalous isomeric decays in Lu174 as a probe of K mixing and interactions in deformed nuclei', Physical Review Letters, vol. 97, no. 12, 122501. https://doi.org/10.1103/PhysRevLett.97.122501

TY - JOUR

T1 - Anomalous isomeric decays in Lu174 as a probe of K mixing and interactions in deformed nuclei

AU - Dracoulis, G. D.

AU - Kondev, F. G.

AU - Lane, G. J.

AU - Byrne, A. P.

AU - McGoram, T. R.

AU - Kibédi, T.

AU - Ahmad, I.

AU - Carpenter, M. P.

AU - Janssens, R. V.F.

AU - Lauritsen, T.

AU - Lister, C. J.

AU - Seweryniak, D.

AU - Chowdhury, P.

AU - Tandel, S. K.

PY - 2006

Y1 - 2006

N2 - A Kπ=13+, 280 ns four-quasiparticle isomer in the odd-odd nucleus Lu174 has been identified and characterized. The isomer decays to both Kπ=7+ and Kπ=0+ rotational bands obtained from the parallel and antiparallel coupling of the proton 7/2+[404] and neutron 7/2+[633] orbitals. K mixing caused by particle-rotation coupling explains the anomalously fast transition rates to the 7+ band but those to the 0+ band are caused by a chance degeneracy between the isomer and a collective state, allowing the mixing matrix element for a large K difference to be deduced.

AB - A Kπ=13+, 280 ns four-quasiparticle isomer in the odd-odd nucleus Lu174 has been identified and characterized. The isomer decays to both Kπ=7+ and Kπ=0+ rotational bands obtained from the parallel and antiparallel coupling of the proton 7/2+[404] and neutron 7/2+[633] orbitals. K mixing caused by particle-rotation coupling explains the anomalously fast transition rates to the 7+ band but those to the 0+ band are caused by a chance degeneracy between the isomer and a collective state, allowing the mixing matrix element for a large K difference to be deduced.

UR - http://www.scopus.com/inward/record.url?scp=33748797677&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.97.122501

DO - 10.1103/PhysRevLett.97.122501

M3 - Article

SN - 0031-9007

VL - 97

JO - Physical Review Letters

JF - Physical Review Letters

IS - 12

M1 - 122501

ER -

Anomalous isomeric decays in Lu174 as a probe of K mixing and interactions in deformed nuclei

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