The differential Cross sections of the ~9Be + α inelastic scattering at 30 MeV were measured at the tandem of Tsukuba University. All the known states of ~9Be up to energies ~ 12 MeV were observed and decomposed into three rotational bands, each of them having a cluster structure consisting of a ~8Be core plus a valence neutron in one of the sub-shells: p_(3/2)~-, s_(1/2+) and p_(1/2) Existence of a neutron halo in the positive parity states was confirmed.
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