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Microscopic structures of parity doublets in the151Pm,153Eu and155Eu nuclei

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Zeitschrift für Physik A Hadrons and Nuclei

Abstract

Microscopic structures of the proposed parity doublet bands in the odd-proton Z=61151Pm and Z=63153, 155Eu nuclei are examined using the quasiparticle phonon nuclear model Hamiltonian including the residual pairing and multipole-multipole interactions. Octupole correlations between intrinsic nonrotational states are studied to check the suggested assignments of parity doublet partners in these nuclei. We conclude significant octupole correlations between a pair ofK π = 1/2± doublets in each of these nuclei, with somewhat weaker correlations betweenK π = 3/2± bands in both the Eu isotopes. No octupole connection between the lowestK π = 5/2± bands is found; however, significant octupole collectivity, built on the low-lying 5/2− bands, is predicted in the higher-lying 5/2+ bands which contain the 5/2+ [402] fragmented strength.

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Authors and Affiliations

  1. Departments of Chemistry and Physics, Florida State University, 32306, Tallahassee, FL, USA

    D. Nosek, R. K. Sheline, P. C. Sood & J. Kvasil

  2. Department of Nuclear Physics, Charles University, V Holešovičkách 2, 180 00, Prague 8, Czechoslovakia

    D. Nosek & J. Kvasil

  3. Department of Physics, Banaras Hindu University, 221005, Varanasi, India

    P. C. Sood

Authors
  1. D. Nosek
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  2. R. K. Sheline
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  3. P. C. Sood
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  4. J. Kvasil
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Additional information

We wish to thank the National Science Foundation for support under Contract No. PHY89-06613 with Florida State University. We are also grateful for the IBM Academic Initiative in Czechoslovakia which provided computer facilities.

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Nosek, D., Sheline, R.K., Sood, P.C. et al. Microscopic structures of parity doublets in the151Pm,153Eu and155Eu nuclei. Z. Physik A - Hadrons and Nuclei 344, 277–283 (1992). https://doi.org/10.1007/BF01303021

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  • DOI: https://doi.org/10.1007/BF01303021

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