Cluster structure in light neutron-rich nuclei

We investigated molecular states and cluster gas-like states in light nuclei based on microscopic calculations with antisymmetrized molecular dynamics. In particular, we focused on excited states of ¹³B and ⁸He. It is suggested that deformed bands, Kπ = 3/2⁻ and Kπ = 1/2⁺, with molecular orbital structures appear in the excited states of ¹³B. In the results of ⁸He, we proposed possible existence of the 0₂⁺ state with dineutron gas-like structure of ⁴He+2n+2n, which is associated with the 3α-cluster structure of the ¹²C(0₂⁺) state.