Cluster formation in low- and high-lying states

Abstract

Structures of excited states in 35Cl have been studied by using antisymmetrized molecular dynamics and generator coordinate method focusing on α- and t-clustering. Various rotational bands are obtained, and a, Kπ = 12− band is assigned to the negative-parity superdeformed band observed by a γ-spectroscopy experiment. The Kπ = 12− band has 3ħω exited configurations and contains both of compact α- and t-cluster structure components, which reflects particle-hole configuration of dominant components. By excitation of intercluster motion, developed α- and t-cluster states are obtained. In high-energy region, α- and t-cluster states are decoupled, and α-cluster structures have lower energy than t-cluster states, which reflects threshold energy of α and t clustering.