Abstract
The linear-chain states of are theoretically investigated by using the antisymmetrized molecular dynamics. The calculated excitation energies and the decay widths of the linear-chain states were compared with the observed data reported by recent experiments. The properties of the positive-parity linear-chain states reasonably agree with the observation, which convinces us of the linear-chain formation in the positive-parity states. On the other hand, in the negative-parity states, it is found that the linear-chain configuration does not correspond to a single eigenstate but is mixed with other configurations in the eigenstates and does not form a single rotational band. As a further evidence of the linear-chain formation, we focus on the -decay pattern. It is shown that the linear-chain states decay to the excited states of daughter nucleus as well as to the ground state, while other cluster states dominantly decay into the ground state. Hence, we regard that this characteristic decay pattern is a strong signature of linear-chain formation.
2 More- Received 1 June 2016
DOI:https://doi.org/10.1103/PhysRevC.94.044303
©2016 American Physical Society