Multi-quasiparticle isomers in Lu174

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

doi:10.1103/PhysRevC.80.014304

Multi-quasiparticle isomers in Lu174

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

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Abstract

Four-, six-, and eight-quasiparticle isomers with Kπ=14-, (21+) and (26-) have been identified in the deformed nucleus Lu174, in addition to the previously reported Kπ=13+, four-quasiparticle isomeric state. Analysis of alignments and in-band crossover-to-cascade branching ratios lead to the characterization of the configurations associated with the Kπ=14- and (21+) isomers. The excitation energies of the observed states are compared with results from multi-quasiparticle calculations that include effects of blocking and residual nucleon-nucleon interactions. Good agreement is found for medium-spin (I=13-14) and the highest spin (I>20) states observed, but there remain ambiguities in assigning configurations in the I=15-19 region.

Original language	English
Article number	014304
Journal	Physical Review C - Nuclear Physics
Volume	80
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevC.80.014304
Publication status	Published - 6 Aug 2009

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title = "Multi-quasiparticle isomers in Lu174",

abstract = "Four-, six-, and eight-quasiparticle isomers with Kπ=14-, (21+) and (26-) have been identified in the deformed nucleus Lu174, in addition to the previously reported Kπ=13+, four-quasiparticle isomeric state. Analysis of alignments and in-band crossover-to-cascade branching ratios lead to the characterization of the configurations associated with the Kπ=14- and (21+) isomers. The excitation energies of the observed states are compared with results from multi-quasiparticle calculations that include effects of blocking and residual nucleon-nucleon interactions. Good agreement is found for medium-spin (I=13-14) and the highest spin (I>20) states observed, but there remain ambiguities in assigning configurations in the I=15-19 region.",

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

year = "2009",

month = aug,

day = "6",

doi = "10.1103/PhysRevC.80.014304",

language = "English",

volume = "80",

journal = "Physical Review C - Nuclear Physics",

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T1 - Multi-quasiparticle isomers in Lu174

AU - Kondev, F. G.

AU - Dracoulis, G. D.

AU - Lane, G. J.

AU - Ahmad, I.

AU - Byrne, A. P.

AU - Carpenter, M. P.

AU - Chowdhury, P.

AU - Janssens, R. V.F.

AU - Kibédi, T.

AU - Lauritsen, T.

AU - Lister, C. J.

AU - Seweryniak, D.

AU - Tandel, S. K.

AU - Zhu, S.

PY - 2009/8/6

Y1 - 2009/8/6

N2 - Four-, six-, and eight-quasiparticle isomers with Kπ=14-, (21+) and (26-) have been identified in the deformed nucleus Lu174, in addition to the previously reported Kπ=13+, four-quasiparticle isomeric state. Analysis of alignments and in-band crossover-to-cascade branching ratios lead to the characterization of the configurations associated with the Kπ=14- and (21+) isomers. The excitation energies of the observed states are compared with results from multi-quasiparticle calculations that include effects of blocking and residual nucleon-nucleon interactions. Good agreement is found for medium-spin (I=13-14) and the highest spin (I>20) states observed, but there remain ambiguities in assigning configurations in the I=15-19 region.

AB - Four-, six-, and eight-quasiparticle isomers with Kπ=14-, (21+) and (26-) have been identified in the deformed nucleus Lu174, in addition to the previously reported Kπ=13+, four-quasiparticle isomeric state. Analysis of alignments and in-band crossover-to-cascade branching ratios lead to the characterization of the configurations associated with the Kπ=14- and (21+) isomers. The excitation energies of the observed states are compared with results from multi-quasiparticle calculations that include effects of blocking and residual nucleon-nucleon interactions. Good agreement is found for medium-spin (I=13-14) and the highest spin (I>20) states observed, but there remain ambiguities in assigning configurations in the I=15-19 region.

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U2 - 10.1103/PhysRevC.80.014304

DO - 10.1103/PhysRevC.80.014304

M3 - Article

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VL - 80

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

IS - 1

M1 - 014304

ER -

Multi-quasiparticle isomers in Lu174

Abstract

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