Exotic shapes in 40Ca and 36Ar studied with Antisymmetrized Molecular Dynamics
The structures of the ground and excited states of sd‐shell nuclei: 40Ca and 36Ar were studied with a method of antisymmetrized molecular dynamics. Recently observed rotational bands were described with deformed intrinsic states which are dominated by excited configurations such as 4p‐4h, 8p‐8h and 4p‐8h states. The results showed the coexistence of various kinds of exotic shapes with oblate, prolate and large prolate deformatios in the low‐energy region of 40Ca. Possible cluster aspects in heavy sd‐shell nuclei were implied in these exotic shapes.