6533b835fe1ef96bd129e8b7
RESEARCH PRODUCT
Low-lying excitations in the odd-odd nucleus154Eu
R. JulinR. KatajanheimoE. LiukkonenR. JäderholmA. Siivolasubject
PhysicsNuclear and High Energy PhysicsDeuterium010308 nuclear & particles physics0103 physical sciencesNuclear fusionDeformation (meteorology)Atomic physics010306 general physicsGround state01 natural sciencesInterpretation (model theory)description
The doubly odd nucleus154Eu was produced during in-beam bombardments of a154Sm target with3He and deuteron beams at 27 and 10 MeV. The resulting gamma-rays were investigated using prompt and delayed gamma-gamma-coincidence equipment. The half-life of the isomeric 2+ level was determined as 2.2±0.1 μs. The partial level scheme, including numerous previously unidentified excitations, can be divided into two separate groups of levels. The results provide evidence for the existence of a very regular ground band and two rather regularK=3 level structures, whose configurations are closely related to it. In addition, several rotational sequences built on the band heads with otherK values have been deduced. Our interpretation of the level scheme disagrees with the previous conclusion that theN=91 nucleus154Eu might have a stable deformation only in its ground state configuration.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1988-03-01 | Zeitschrift f�r Physik A Atomic Nuclei |