Exotic nuclear shapes - axial and nonaxial octupoles at normal and at super-deformation

摘要

Collective octupole dynamics have been studied including nonaxial components of the octupole mean field, mainly at superdeformed shape in the Hg-Pb region. Both the Strutinsky method combined with cranking and the generator coordinate method within the selfconsistent Hartree-Fock basis suggest the existence of collective octupole excitations at the superdeformed minima. GCM calculations point out to the E1 transitions as their most prominent experimental manifestation. The influence of the nonaxial octupole components on octupole dynamics in traditional octupole region of Ra-Th nuclei is also discussed. (authors) 38 refs., 6 figs., 1 tab. (Atomindex citation 26:048525)