Spectroscopy of 9Be and observation of neutron halo structure in the states of positive parity rotational band
1 NRC Kurchatov Institute, Moscow, Russia
2 Lomonosov Moscow State University, Moscow, Russia
3 Nuclear Physics Institute, Almaty, Kazakhstan
4 Al-Farabi Kazakh National University, Kazakhstan
5 Universidad Autonoma del Estado de Mexico, Mexico
6 Institute of Physics, University of Tsukuba, Japan
7 RIKEN, Wako, Saitama, Japan
a e-mail: Corresponding author: email@example.com
Published online: 20 March 2014
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: p3/2−, s1/2+ and p1/2−. Existence of a neutron halo in the positive parity states was confirmed.
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