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Shape co-existence and structural evolution of the yrast band in 157Yb

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Abstract:

The high-spin states of 157Yb have been studied via the 144Sm(16O, 3n) reaction at 16O energy of 90 MeV using techniques of in-beam γ-ray spectroscopy. Measurement of γ-γ-t coincidences was performed with 11 BGO(AC)HPGe detectors. Based on the measured results of γ-γ coincidences, γ-ray anisotropies and DCO ratios, the level scheme for 157Yb was established. The shape co-existence and structural evolution of the νi 13/2 band with increasing angular momentum in 157Yb have been discussed. The systematics of the νi 13/2 bands in the N = 87 odd-A isotones have been compared.

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Authors and Affiliations

  1. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, PRC, , , , , , CN

    Y. Zheng, X.H. Zhou, Y.H. Zhang, Y.X. Guo, X.G. Lei, Z. Liu, J.J. He, M.L. Liu & W.J. Luo

  2. China Institute of Atomic Energy, Beijing 102413, PRC, , , , , , CN

    S.X. Wen, L.H. Zhu & C.X. Yang

Authors
  1. Y. Zheng
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  2. X.H. Zhou
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  3. Y.H. Zhang
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  4. Y.X. Guo
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  5. X.G. Lei
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  6. Z. Liu
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  7. J.J. He
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  8. M.L. Liu
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  9. W.J. Luo
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  10. S.X. Wen
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  11. L.H. Zhu
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  12. C.X. Yang
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Received: 7 January 2002 / Accepted: 10 April 2002

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Zheng, Y., Zhou, X., Zhang, Y. et al. Shape co-existence and structural evolution of the yrast band in 157Yb. Eur Phys J A 14, 133–136 (2002). https://doi.org/10.1140/epja/i2002-10025-9

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  • DOI: https://doi.org/10.1140/epja/i2002-10025-9

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