Abstract
Structures of ground and excited states of C isotopes are theoretically investigated with the method of antisymmetrized molecular dynamics. For 14C, it is suggested that a linear-chain 3a structure can be stabilized by the excess neutrons and may construct an rotational band near the 10Be+α threshold energy. In 11C and its mirror nucleus 11B, a cluster gas state and a linear-like cluster state are suggested in excited states. Possible assignment of the cluster states in 11B with the experimental energy levels are discussed. Deformations of proton and neutron densities of the ground bands in neutron-rich C are also discussed.
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