Abstract
Excited states in were populated via the α decay of and the subsequent decay was observed with the GABRIELA detection system installed at the focal plane of the VASSILISSA recoil separator. The energies, spins, and parities of these states could be established through combined , and conversion-electron spectroscopy. The first members of the ground-state rotational band were identified. Their excitation energies as well as the observation of a cross-over transition confirm the assignment of for the ground state of . Two excited states were also observed and their decay properties suggest that they correspond to the particle excitation and hole excitation . The analysis suggests that the 279-keV transition de-exciting the state has anomalous conversion coefficients.
1 More- Received 10 March 2006
DOI:https://doi.org/10.1103/PhysRevC.74.044303
©2006 American Physical Society