α-Cluster States in Intermediate Mass Nuclei

ABSTRACT

Properties of intermediate mass nuclei have been investigated within the framework of the α-cluster model in combination with systematic double-folding potentials. Previously, this α-cluster model has been widely applied to light nuclei, in particular to ⁸Be = α 7⊗ α, ²⁰Ne = ¹⁶O ⊗ α, and ⁴⁴Ti = ⁴⁰Ca ⊗ α, and to heavy nuclei, in particular to ²¹²Po = ²⁰⁸Pb ⊗ α. In the present work a wide range of nuclei is investigated with the magic neutron number N = 50 in the mass range around A ≈ 80 - 100: (A+4,N=52) = (A,N=50) ⊗ α. It is found that excitation energies, decay properties, and transition strengths can be described successfully within this model. The smooth and small variation of the underlying parameters of the α-nucleus potential may be used for extrapolations to predict experimentally unknown properties in the nuclei under study.