Phenomenological description of rotational bands in the pear shaped nuclei
- Institute of Physics and Nuclear Engineering, Bucharest, P.O. Box MG6 (Romania)
- Institut fuer Theoretishe Physik der Universitaet, Auf der Morgenstelle 14, Tuebingen (Germany)
The coherent state model is extended to negative parity states. Thus three positive (ground, beta, and gamma) and three negative parity bands are projected out from three orthogonal states exhibiting both quadrupole and octupole deformations. An effective Hamiltonian acting on the space of projected states is constructed. For illustration, the numerical application is confined to the ground and K{sup {pi}}=0{sup {minus}} bands. In a certain range of deformations these bands show a {open_quotes}shell{close_quotes} structure. Good agreement with experimental data in {sup 218,220,226}Ra is obtained for energy levels and E1 transition probabilities. Specific features like the interleaved structure, the low energy of the state 1{sup {minus}}, and strong E1 transitions are well described. {copyright} {ital 1997} {ital The American Physical Society}
- OSTI ID:
- 541979
- Journal Information:
- Physical Review, C, Vol. 55, Issue 4; Other Information: PBD: Apr 1997
- Country of Publication:
- United States
- Language:
- English
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