Non-yrast positive-parity structures in the γ-soft nucleus Er156

J. M. Rees; E. S. Paul; M. A. Riley; J. Simpson; A. D. Ayangeakaa; H. C. Boston; M. P. Carpenter; C. J. Chiara; U. Garg; D. J. Hartley; R. V.F. Janssens; D. S. Judson; F. G. Kondev; T. Lauritsen; N. M. Lumley; J. Matta; P. J. Nolan; J. Ollier; M. Petri; J. P. Revill; L. L. Riedinger; S. V. Rigby; C. Unsworth; X. Wang; S. Zhu

doi:10.1103/PhysRevC.83.044314

Non-yrast positive-parity structures in the γ-soft nucleus Er156

J. M. Rees, E. S. Paul, M. A. Riley, J. Simpson, A. D. Ayangeakaa, H. C. Boston, M. P. Carpenter, C. J. Chiara, U. Garg, D. J. Hartley, R. V.F. Janssens, D. S. Judson, F. G. Kondev, T. Lauritsen, N. M. Lumley, J. Matta, P. J. Nolan, J. Ollier, M. Petri, J. P. RevillL. L. Riedinger, S. V. Rigby, C. Unsworth, X. Wang, S. Zhu

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Abstract

Weakly populated band structures have been established in Er156 at low to medium spins, following the Cd114(Ca48,6nγ) reaction at 215 MeV. High-fold γ-ray coincidence data were recorded in a high-statistics experiment with the Gammasphere spectrometer. Bands built on the second 0⁺ and 2⁺ (γ-vibrational) states have been established. A large energy staggering between the even- and odd-spin members of the γ-vibrational band suggests a γ-soft nature of this nucleus. An additional band is discussed as being based on a rotationally aligned (νh_9/2,f _7/2)2 structure, coexisting with the systematically observed, more favorable (νi_13/2)2 aligned structure seen in this mass region.

Original language	English
Article number	044314
Journal	Physical Review C - Nuclear Physics
Volume	83
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevC.83.044314
State	Published - Apr 22 2011
Externally published	Yes

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Rees, J. M., Paul, E. S., Riley, M. A., Simpson, J., Ayangeakaa, A. D., Boston, H. C., Carpenter, M. P., Chiara, C. J., Garg, U., Hartley, D. J., Janssens, R. V. F., Judson, D. S., Kondev, F. G., Lauritsen, T., Lumley, N. M., Matta, J., Nolan, P. J., Ollier, J., Petri, M., ... Zhu, S. (2011). Non-yrast positive-parity structures in the γ-soft nucleus Er156. Physical Review C - Nuclear Physics, 83(4), Article 044314. https://doi.org/10.1103/PhysRevC.83.044314

@article{b9b9cefa4a9f42769be4f854d561bdc1,

title = "Non-yrast positive-parity structures in the γ-soft nucleus Er156",

abstract = "Weakly populated band structures have been established in Er156 at low to medium spins, following the Cd114(Ca48,6nγ) reaction at 215 MeV. High-fold γ-ray coincidence data were recorded in a high-statistics experiment with the Gammasphere spectrometer. Bands built on the second 0+ and 2+ (γ-vibrational) states have been established. A large energy staggering between the even- and odd-spin members of the γ-vibrational band suggests a γ-soft nature of this nucleus. An additional band is discussed as being based on a rotationally aligned (νh9/2,f 7/2)2 structure, coexisting with the systematically observed, more favorable (νi13/2)2 aligned structure seen in this mass region.",

author = "Rees, {J. M.} and Paul, {E. S.} and Riley, {M. A.} and J. Simpson and Ayangeakaa, {A. D.} and Boston, {H. C.} and Carpenter, {M. P.} and Chiara, {C. J.} and U. Garg and Hartley, {D. J.} and Janssens, {R. V.F.} and Judson, {D. S.} and Kondev, {F. G.} and T. Lauritsen and Lumley, {N. M.} and J. Matta and Nolan, {P. J.} and J. Ollier and M. Petri and Revill, {J. P.} and Riedinger, {L. L.} and Rigby, {S. V.} and C. Unsworth and X. Wang and S. Zhu",

year = "2011",

month = apr,

day = "22",

doi = "10.1103/PhysRevC.83.044314",

language = "English",

volume = "83",

journal = "Physical Review C - Nuclear Physics",

issn = "0556-2813",

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}

Rees, JM, Paul, ES, Riley, MA, Simpson, J, Ayangeakaa, AD, Boston, HC, Carpenter, MP, Chiara, CJ, Garg, U, Hartley, DJ, Janssens, RVF, Judson, DS, Kondev, FG, Lauritsen, T, Lumley, NM, Matta, J, Nolan, PJ, Ollier, J, Petri, M, Revill, JP, Riedinger, LL, Rigby, SV, Unsworth, C, Wang, X & Zhu, S 2011, 'Non-yrast positive-parity structures in the γ-soft nucleus Er156', Physical Review C - Nuclear Physics, vol. 83, no. 4, 044314. https://doi.org/10.1103/PhysRevC.83.044314

TY - JOUR

T1 - Non-yrast positive-parity structures in the γ-soft nucleus Er156

AU - Rees, J. M.

AU - Paul, E. S.

AU - Riley, M. A.

AU - Simpson, J.

AU - Ayangeakaa, A. D.

AU - Boston, H. C.

AU - Carpenter, M. P.

AU - Chiara, C. J.

AU - Garg, U.

AU - Hartley, D. J.

AU - Janssens, R. V.F.

AU - Judson, D. S.

AU - Kondev, F. G.

AU - Lauritsen, T.

AU - Lumley, N. M.

AU - Matta, J.

AU - Nolan, P. J.

AU - Ollier, J.

AU - Petri, M.

AU - Revill, J. P.

AU - Riedinger, L. L.

AU - Rigby, S. V.

AU - Unsworth, C.

AU - Wang, X.

AU - Zhu, S.

PY - 2011/4/22

Y1 - 2011/4/22

N2 - Weakly populated band structures have been established in Er156 at low to medium spins, following the Cd114(Ca48,6nγ) reaction at 215 MeV. High-fold γ-ray coincidence data were recorded in a high-statistics experiment with the Gammasphere spectrometer. Bands built on the second 0+ and 2+ (γ-vibrational) states have been established. A large energy staggering between the even- and odd-spin members of the γ-vibrational band suggests a γ-soft nature of this nucleus. An additional band is discussed as being based on a rotationally aligned (νh9/2,f 7/2)2 structure, coexisting with the systematically observed, more favorable (νi13/2)2 aligned structure seen in this mass region.

AB - Weakly populated band structures have been established in Er156 at low to medium spins, following the Cd114(Ca48,6nγ) reaction at 215 MeV. High-fold γ-ray coincidence data were recorded in a high-statistics experiment with the Gammasphere spectrometer. Bands built on the second 0+ and 2+ (γ-vibrational) states have been established. A large energy staggering between the even- and odd-spin members of the γ-vibrational band suggests a γ-soft nature of this nucleus. An additional band is discussed as being based on a rotationally aligned (νh9/2,f 7/2)2 structure, coexisting with the systematically observed, more favorable (νi13/2)2 aligned structure seen in this mass region.

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U2 - 10.1103/PhysRevC.83.044314

DO - 10.1103/PhysRevC.83.044314

M3 - Article

AN - SCOPUS:79960899027

SN - 0556-2813

VL - 83

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

IS - 4

M1 - 044314

ER -

Non-yrast positive-parity structures in the γ-soft nucleus Er156

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