Chapter V Structure of Light fp-Shell Nuclei : Effects of Core-Excitation and α-Clustering Correlation

概要

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Detailed investigations have been made on the applicabilities of the (fp)^n shell model in describing the light fp-shell nuclei with A≦44. Many levels of these nuclei are shown to be well accounted for by the shell model. The roles of core-polarization renormalization and the quadrupole-quadrupole dominant character in the realistic effective interaction are discussed. Characteristics of the wavefunctions of ^<44>Ti have been studied in detail from several viewpoints. The shell and α-cluster aspects observed in ^<44>Ti can be well described by the extended model proposed here in which the (fp)^4 shell and ^<40>Ca+α-cluster configurations are incorporated. It is clarified that the α-like four-body correlation has important effects on reproducing the low-spin yrast rotational feature and the α-transfer spectroscopic factors of the ground and high-lying mole-cule-like bands in ^<44>Ti. Another extension of the model space has been tried for ^<42>Sc and ^<44>Ti by including the core-excited configurations.
理論物理学刊行会の論文
1979-08-31