Microscopic structures of parity doublets in the151Pm,153Eu and155Eu nuclei |
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Authors: | D Nosek R K Sheline P C Sood J Kvasil |
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Institution: | 1. Departments of Chemistry and Physics, Florida State University, 32306, Tallahassee, FL, USA 2. Department of Nuclear Physics, Charles University, V Hole?ovi?kách 2, 180 00, Prague 8, Czechoslovakia 3. Department of Physics, Banaras Hindu University, 221005, Varanasi, India
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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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