https://doi.org/10.1140/epja/i2012-12080-y
Regular Article - Theoretical Physics
Magnetic moments of K isomers as indicators of octupole collectivity
1
Institute of Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, Tzarigrad Road 72, BG-1784, Sofia, Bulgaria
2
Department of Physics, University of Surrey, GU2 7XH, Guildford, UK
3
CERN, CH-1211, Geneva 23, Switzerland
* e-mail: nminkov@inrne.bas.bg
Received:
21
October
2011
Accepted:
2
May
2012
Published online:
4
June
2012
The relation between the quadrupole-octupole deformation and the structure of high-K isomers in heavy even-even nuclei is studied through a reflection asymmetric deformed shell model including a BCS procedure with constant pairing interaction. Two-quasiparticle states with K π = 4−, 5−, 6−, 6+ and 7− are considered in the region of actinide nuclei (U, Pu and Cm) and rare-earth nuclei (Nd, Sm and Gd). The behaviour of two-quasiparticle energies and magnetic dipole moments of these configurations is examined over a wide range in the plane of quadrupole and octupole deformations (β 2 and β 3. In all considered actinide nuclei, the calculations show that there is pronounced sensitivity of the magnetic moments to the octupole deformation. In the rare-earth nuclei, the calculations for 154, 156Gd show stronger sensitivity of the magnetic moment to the octupole deformation than in the other considered cases.
© SIF, Springer-Verlag Berlin Heidelberg, 2012
