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Well-Deformed Oblate K Isomers Induced by Oblate Intruder
States |
| XU Fu-Rong |
| 1Department of Technical Physics, Peking University,
Beijing 100871
2MOE Key Laboratory, Institute of Heavy Ion Physics,
Peking University, Beijing 100871
3Institute of Theoretical Physics, Chinese Academy of
Sciences, Beijing 100080 |
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| Cite this article: |
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XU Fu-Rong 2001 Chin. Phys. Lett. 18 750-752 |
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Abstract With configuration-constrained potential energy surfaces, it has been found that the neutron-deficient Z ≈ 82 nuclei can have well-deformed oblate K isomers which are formed by exciting quasiparticles to the proton i13/2 and h9/2 oblate intruder orbitals. To achieve the configuration constrained calculations, the maximum-overlap method of wavefunctions is proposed. In the present calculations of quasiparticle states, quadrupole pairings are included. The observed Kπ = 11-1 isomer in 188Pb is confirmed to be oblately deformed, with energy consistent with the experiment. Some low-lying oblate isomeric states are predicted for 187Tl.
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| Keywords:
21.60.Cs
27.70.+q
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Published: 01 June 2001
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