Abstract
Shape coexistence and band structure near yrast line of the Z = N doublymagic nucleus 40Ca have been investigated by theconfiguration-dependent cranked Nilsson–Strutinsky approach. The observednormal deformed and superdeformed bands are explained and the terminatingstates are confirmed by the calculations. The transition quadrupole momentQt of the calculated superdeformed band is in good agreement withthe observed one at high spin. There is shape coexistence within the sameconfiguration. Possible normal deformed and superdeformed bands withrotation around the intermediate axis in several interesting configurationsof 40Ca are discussed. Possible favored superdeformed band terminationsin 38Ca and 38Ar are predicted. The experimental results in38Ar are discussed simply.
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