6533b828fe1ef96bd128785e
RESEARCH PRODUCT
Structure of theN=59 nucleus97Sr: coexistence of spherical and deformed states
K. SistemichKarl KratzH. OhmB. PfeifferSlobodan BrantG. LhersonneauVladimir Paarsubject
PhysicsNuclear and High Energy PhysicsExcited stateStructure (category theory)Nuclear fusionHead (vessel)Atomic physicsGround statedescription
A band with a rotational pattern based on a state at 585.1 keV has been identified in theN=59 neutron-rich nucleus97Sr. Its properties lead to the [422] 3/2 Nilsson-orbital assignment for the band head. There is evidence for a second band with the head at 644.7 keV and the configuration [541] 3/2. Since the ground state and the lowest excited levels are spherical, shape coexistence is established for97Sr. A deformed nature of several levels at 500–600 keV results also from QRPA-model calculations. The structure of the low-lying spherical levels has been studied in the frame of the IBF model. The results of the present investigations lead to a better understanding of theN=59 isotones which constitute the link between the spherical and deformed nuclei atA∼100 as a species with shape coexistence but without any indications of particular softness.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1990-06-01 | Zeitschrift f�r Physik A Atomic Nuclei |