Coexistence of Cluster Structure and Mean-field-type Structure in Medium-weight Nuclei

摘要

We have studied the coexistence of cluster structure and mean-field-type structure in ~20Ne and ~40Ca using Antisymmetrized Molecular Dynamics (AMD) + Generator Coordinate Method (GCM). By energy variation with new constraint for clustering, we calculate cluster structure wave function. Superposing cluster structure wave functions and mean-field-type structure wave function, we found that ~8Be-~12C, α-36Ar and ~12C-28Si cluster structure are important components of K = 0 band of ~20 Ne, that of normal deformed band of ~40 Ca and that of super deformed band of ~40 Ca, respectively.