| Sammanfattning: | New levels have been established above the 861-keV, 9/2+ isomeric state in Fe61. The observations can be reproduced satisfactorily by shell model calculations, but only after a significant lowering of the νg9/2 single-particle energy with respect to the value determined empirically from levels outside a Ca48 core. The results are also described well within the scope of the particle-triaxial-rotor model assuming a deformation β2~0.24. The present findings, together with the recently measured magnetic and quadrupole moments of this state, point toward a structure possibly associated with a prolate shape. © 2008 The American Physical Society.
|
|---|