Microscopic approach to transition-energy staggering in superdeformed bands

Autor:	A. A. Shchurenkov, I. M. Pavlichenkov
Rok vydání:	2001
Předmět:	Physics Nuclear and High Energy Physics Condensed matter physics Distortion Nuclear Theory Moment (physics) Nucleon Rotation Atomic and Molecular Physics and Optics Energy (signal processing) Nuclear shape Axial deformation Bifurcation
Zdroj:	Physics of Atomic Nuclei. 64:595-610
ISSN:	1562-692X 1063-7788
DOI:	10.1134/1.1368218
Popis:	The current status of the ΔI=4 bifurcation in superdeformed bands is reviewed by making use of a theoretical model based on the interaction of rotation and single-particle nucleon motion in nuclei with an axial deformation. It is shown that the hexadecapole-type distortion of a nuclear shape by rotation is especially important for explaining the phenomenon. The necessary condition for staggering is obtained from an analysis of the nonadiabatic effect of rotation. This criterion is applied to 30 superdeformed bands in the mass region around A ∼ 150. An analysis confirms the configuration-dependence effect and allows us to discriminate between single-particle states active and inactive for staggering. The consideration is based on the additivity of the nonaxial hexadecapole moment, which plays a key role in the staggering phenomenon.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ee0e5691cfec20c46a82244730b7643a https://doi.org/10.1134/1.1368218 Zobrazit plný text záznamu Plný text ve formátu PDF