Journal
PHYSICAL REVIEW C
Volume 63, Issue 5, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.63.054306
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The region of light actinides (Z similar to 88,N similar to 134); which is thought to exhibit signs of stable octupole deformation, offers a real challenge for nuclear structure models. We study the even-even Ra-Th nuclei in the framework of the spdf interacting boson model and we find that while the properties of the low-lying states can be understood without stable octupole deformation, higher spin states (J greater than or similar to 12 (h) over bar) in some of these nuclei (e.g., Ra-226) suggest that octupole deformation develops with increasing spin. We also discuss how octupole deformation can arise in the rotational (dynamical symmetry) limit.
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