Nuclear structure studies of bound and unbound states in drip-line nuclei

Structure of excited states of unstable nuclei studied with antisymmetrized molecular dynamics

“…It is surprising that such a 2 hω state appears in the low energy region. The clustering structure in the K = 3/2 − band is the very molecular structure which has been predicted by W. Von Oertzen [7]. This is the first microscopic calculation which shows that such an exotic structure should exist in the low energy region.…”

“…Then a 17/2 − state is obtained as the highest spin state. W. Von Oertzen et al suggested some candidates for the states belonging to this new negative parity band in the experimental data observed in the 2 neutron transfer reactions, 9 Be( 13 C, 11 C) 11 Be [7]. Although they suggested a possibility of 19/2 − state, the present results are negative to such a high spin state as 19/2 − in the rotational K = 3/2 − band, because 17/2 − is the highest spin made from the 2p-3h configurations.…”

“…The molecular orbits in Be isotopes have been suggested in 9 Be with 2α + n cluster models [19]. W. Von Oertzen et al proposed a picture of Be dimers [6,7] to understand the excited states of neutron-rich Be isotopes. They predicted σ-and π-orbits which are made from linear combinations of p-orbits surrounding 2-α clusters (see Fig.…”

“…In the excited states of light unstable nuclei, an exotic molecular structure of light unstable nuclei is one of the attractive subjects in experimental and theoretical research. For example, molecular structure has been suggested to appear in neutron-rich nuclei, such as 10 Be and 12 Be [1,[4][5][6][7][8][9][10][11][12]. W. Von Oertzen et al [6,7] proposed a kind of exotic clustering structure with a 2hω configuration in the excited states of 11 Be.…”

“…For example, molecular structure has been suggested to appear in neutron-rich nuclei, such as 10 Be and 12 Be [1,[4][5][6][7][8][9][10][11][12]. W. Von Oertzen et al [6,7] proposed a kind of exotic clustering structure with a 2hω configuration in the excited states of 11 Be. However, there have been few microscopic studies on the excited states of 11 Be.…”