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Structure of unstable nuclei in the sd-pf shell region by shell model with proper tensor force

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Abstract.

Focusing on the importance of the tensor force in the effective interaction, we investigate the structure of unstable nuclei around N=28 with large-scale shell-model calculations. From the analysis of the spin-tensor decomposition for some interactions, the tensor force in the effective interaction should be close to the π+ ρ force, whereas it is much weaker in the Millener-Kurath (MK) interaction which is often used as the cross-shell interaction. The significance of the tensor force appears in the structure around 42Si: the proper tensor force predicts that it is deformed contrary to the result from MK.

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Authors and Affiliations

  1. Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki, 319-1195, Japan

    Y. Utsuno

  2. Department of Physics, University of Tokyo, Hongo, Tokyo, 113-0033, Japan

    T. Otsuka

  3. Center for Nuclear Study, University of Tokyo, Hongo, Tokyo, 113-0033, Japan

    T. Otsuka & T. Mizusaki

  4. RIKEN, Hirosawa, Wako-shi, Saitama, 351-0198, Japan

    T. Otsuka

  5. Institute of Natural Sciences, Senshu University, Kanda, Chiyoda, Tokyo, 101-8425, Japan

    T. Mizusaki

  6. Center for Mathematical Sciences, University of Aizu, Tsuruga, Ikki-machi Aizu-Wakamatsu, Fukushima, 965-8580, Japan

    M. Honma

Authors
  1. Y. Utsuno
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  2. T. Otsuka
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  3. T. Mizusaki
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  4. M. Honma
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Utsuno, Y., Otsuka, T., Mizusaki, T. et al. Structure of unstable nuclei in the sd-pf shell region by shell model with proper tensor force. Eur. Phys. J. Spec. Top. 150, 187–188 (2007). https://doi.org/10.1140/epjst/e2007-00300-y

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  • DOI: https://doi.org/10.1140/epjst/e2007-00300-y

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