We adopt a self-consistent cranked Nilsson plus quasiparticle random-phase approximation by using a Hamiltonian of separable form to study the collective properties of 152Dy as it evolves toward the superdeformed shape. Our calculation, while confirming the octupole character of the negative-parity superdeformed bands, emphasizes the effect of the new shell structure, induced by fast rotation combined with large deformation, on the other collective modes. It shows, in particular, that superdeformation enhances strongly the collectivity of the low-lying scissors mode built on the superdeformed shape.
Shape transitions and collective excitations in 152Dy / J., Kvasil; LO IUDICE, Nicola; Andreozzi, Francesco; F., Knapp; Porrino, Antonio. - In: PHYSICAL REVIEW. C, NUCLEAR PHYSICS. - ISSN 0556-2813. - STAMPA. - 73:(2006), pp. 034302-1-034302-9. [10.1103/PhysRevC.73.034302]
Shape transitions and collective excitations in 152Dy
LO IUDICE, NICOLA;ANDREOZZI, FRANCESCO;PORRINO, ANTONIO
2006
Abstract
We adopt a self-consistent cranked Nilsson plus quasiparticle random-phase approximation by using a Hamiltonian of separable form to study the collective properties of 152Dy as it evolves toward the superdeformed shape. Our calculation, while confirming the octupole character of the negative-parity superdeformed bands, emphasizes the effect of the new shell structure, induced by fast rotation combined with large deformation, on the other collective modes. It shows, in particular, that superdeformation enhances strongly the collectivity of the low-lying scissors mode built on the superdeformed shape.| File | Dimensione | Formato | |
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