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- Title
TIDAL WAVES AND ONSET OF COLLECTIVITY ABOVE N = 126.
- Authors
Reviol, W.; Sarantites, D. G.; Chen, X.; Montero, M.; Pechenaya, O. L.; Snyder, J.; Janssens, R. V. F.; Carpenter, M. P.; Chiara, C. J.; Khoo, T. L.; Lauritsen, T.; Lister, C. J.; Seweryniak, D.; Zhu, S.; Hauschild, K.; Lopez-Martens, A.; Hartley, D. J.; Frauendorf, S.
- Abstract
Recent experiments in the actinide region, using Gammasphere and the evaporation residue detector HERCULES, have covered the territory between N = 126 and the center of static octupole deformation at N = 134. The 220Th nucleus and the neighboring 218Ra and 219Th nuclei mark the emergence of quadrupole-octupole collectivity in this mass region. Their octupole bands have B(E1)/B(E2) ratios which are typical for the region, but the level spacings do not concur with a rotational-like behavior. In addition, a spin-dependent staggering of the B(E1)/B(E2) ratios is evident. These features can be described, based on a phonon picture, by a constant-frequency tidal-wave mode for a reflection-asymmetric nuclear surface.
- Subjects
ACTINIDE elements; TSUNAMIS; GAMMA rays; RADIOISOTOPES; EVAPORATION (Chemistry); DEFORMATIONS (Mechanics); QUADRUPOLES; NUCLEAR spin
- Publication
Acta Physica Polonica B, 2011, Vol 42, Issue 3/4, p671
- ISSN
0587-4254
- Publication type
Article
- DOI
10.5506/APhysPolB.42.671