Shape Coexistence and Band Termination in 131La

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DONG Bao-Guo, GUO Hong-Chao and Ingemar Ragnarsson. Shape Coexistence and Band Termination in 131La[J]. Chinese Physics C, 2002, 26(3): 266-272.
DONG Bao-Guo, GUO Hong-Chao and Ingemar Ragnarsson. Shape Coexistence and Band Termination in 131La[J]. Chinese Physics C, 2002, 26(3): 266-272. shu
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Received: 2001-03-27
Revised: 1900-01-01
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Shape Coexistence and Band Termination in 131La

    Corresponding author: DONG Bao-Guo,
  • China Institute of Atomic Energy, Beijing 102413, China

Abstract: The configuration-dependent cranked Nilsson-Strutinsky model is used to study the band structures in 131La. Shape coexistence and band termination are investigated for several configurations. The calculations indicate that 131La is a γ-soft nucleus. The theoretical results are compared with experimental data. The calculated π(h11/2)2⊙ν(h11/2)8 configuration with (π,α)=(+,-1/2) shows very good agreement with the experimental band observed to highest spin. The termination of this band is not favored, i.e. a relatively large energy is required to build the highest spin states in the band.

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