6533b874fe1ef96bd12d600c
RESEARCH PRODUCT
Single-Particle Excitations and Collective Vibrational Modes in 96Zr
T. BelgyaÁ. VeresE. VerhoS. W. YatesB. FazekasH. MachJ. KumpulainenA. PassojaGyörgy MolnárR. JulinR. A. GatenbyE. W. Kleppingersubject
PhysicsSpinsExcited stateMolecular vibrationNuclear TheoryQuadrupolePhysics::Accelerator PhysicsInverseNeutronPhysics::Atomic PhysicsAtomic physicsMultipole expansionExcitationdescription
New results from (n,n’γ) and (p,p’γ) reactions, as well as from β- decay confirm the double subshell closure in 96Zr and provide a detailed level scheme for this nucleus. The 1750 keV first 2+ state is described as a neutron particle-hole excitation, while the positive-parity band built on the 1582 keV excited 0+ state is characterised by quadrupole vibrational collectivity at low spins. Candidates for two-phonon octupole, quadrupole-octupole and higher multipole states are suggested on the basis of fast El and E2 decays to the 3- octupole state. The recently observed large octupole strength, its inverse relationship with the filling of the νlh11/2 orbital, and the onset of quadrupole deformation are also discussed.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1988-01-01 |