6533b7d2fe1ef96bd125e9f9
RESEARCH PRODUCT
Self-Consistent Tilted-Axis-Cranking Study of Triaxial Strongly Deformed Bands inEr158at Ultrahigh Spin
Jacek DobaczewskiJacek DobaczewskiYue ShiJunchen PeiJunchen PeiJunchen PeiN. NikolovS. FrauendorfWitold NazarewiczWitold NazarewiczWitold NazarewiczFurong Xusubject
Surface (mathematics)Maxima and minimaPhysicsSpinsDeformation (mechanics)Saddle pointNuclear TheoryQuadrupoleGeneral Physics and AstronomyAtomic physicsSelf consistentSpin (physics)description
Stimulated by recent experimental discoveries, triaxial strongly deformed (TSD) states in $^{158}\mathrm{Er}$ at ultrahigh spins have been studied by means of the Skyrme-Hartree-Fock model and the tilted-axis-cranking method. Restricting the rotational axis to one of the principal axes---as done in previous cranking calculations---two well-defined TSD minima in the total Routhian surface are found for a given configuration: one with positive and another with negative triaxial deformation $\ensuremath{\gamma}$. By allowing the rotational axis to change direction, the higher-energy minimum is shown to be a saddle point. This resolves the long-standing question of the physical interpretation of the two triaxial minima at a very similar quadrupole shape obtained in the principal-axis-cranking approach. Several TSD configurations have been predicted, including a highly deformed band, which is a candidate for the structure observed in experiment.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2012-02-28 | Physical Review Letters |