Journalartikel

Jahr der Veröffentlichung: 2006

Seiten: 497-509

Zeitschrift: Journal of Physics G: Nuclear and Particle Physics

Bandnummer: 32

Heftnummer: 4

ISSN: 0954-3899

eISSN: 1361-6471

Open Access Status: Green

DOI Link: https://doi.org/10.1088/0954-3899/32/4/008

Verlag: IOP Publishing

Abstract: 
We propose a collective model formalism which describes the strong parity shift observed in low-lying spectra of nuclei with octupole deformations together with the fine rotational band structure developed at higher-angular momenta. The parity effect is obtained by the Schrodinger equation for oscillations of the reflection asymmetric (octupole) shape between two opposite orientations in an angular momentum dependent double-well potential. The rotational structure is obtained by a collective quadrupole-octupole rotation Hamiltonian. The model scheme reproduces the complicated beat staggering patterns observed in the octupole bands of light actinide nuclei. It explains the angular momentum evolution of octupole spectra as the interplay between the octupole shape oscillation (parity shift) mode and the stable quadrupole-octupole rotation mode.

Harvard-Zitierstil: Minkov, N., Ytov, P., Drenska, S. and Scheid, W. (2006) Parity shift and beat staggering structure of octupole bands in a collective model for quadrupole-octupole-deformed nuclei, Journal of Physics G: Nuclear and Particle Physics, 32(4), pp. 497-509. https://doi.org/10.1088/0954-3899/32/4/008

APA-Zitierstil: Minkov, N., Ytov, P., Drenska, S., & Scheid, W. (2006). Parity shift and beat staggering structure of octupole bands in a collective model for quadrupole-octupole-deformed nuclei. Journal of Physics G: Nuclear and Particle Physics. 32(4), 497-509. https://doi.org/10.1088/0954-3899/32/4/008