Abstract
Excited states in and were populated via decay and were studied via conversion electrons and -ray spectroscopy at the Tandem Accelerator in the INFN Laboratori Nazionali del Sud in Catania, Italy. Conversion electrons were detected by a mini-orange spectrometer with a transmission energy window that ranged from 500 to 1000 keV for and from 350 keV to 750 keV for . The decays of the first excited state at 893 keV in and at 676 keV in were observed, and ratios of reduced transition probabilities were deduced. Furthermore, for both nuclei admixtures in transitions from the lower members of the and bands to the ground-state band were observed, and values were deduced. The values of the for the decays are compared to IBA-1 calculations that use the full Hamiltonian in multipole expansion. Properties related to the nuclear shape seem to be sensitive to higher-order terms of the expansion.
9 More- Received 9 September 2014
DOI:https://doi.org/10.1103/PhysRevC.90.044317
©2014 American Physical Society