Spectroscopy of 9Be and observation of neutron halo structure in the states of positive parity rotational band

A.S. Demyanova; A.A. Ogloblin; A.N. Danilov; S.V. Dmitriev; S.A. Goncharov; N. Burtebaev; J. Burtebaeva; N. Saduev; T.L. Belyaeva; H. Suzuki; A. Ozawa; Y. Abe; S. Fukuoka; Y. Ishibashi; S. Ito; T. Komatsubara; T. Moriguchi; D. Nagae; R. Nishikiori; T. Niwa; K. Okumura; H. Ooishi; K. Yokoyama; S. Kubono

doi:10.1051/epjconf/20146602026

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EPJ Web of Conferences 66, 02026 (2014)
https://doi.org/10.1051/epjconf/20146602026

Spectroscopy of ⁹Be and observation of neutron halo structure in the states of positive parity rotational band

A.S. Demyanova¹^a, A.A. Ogloblin¹, A.N. Danilov¹, S.V. Dmitriev¹, S.A. Goncharov², N. Burtebaev³, J. Burtebaeva³, N. Saduev⁴, T.L. Belyaeva⁵, H. Suzuki⁶, A. Ozawa⁶, Y. Abe⁶, S. Fukuoka⁶, Y. Ishibashi⁶, S. Ito⁶, T. Komatsubara⁶, T. Moriguchi⁶, D. Nagae⁶, R. Nishikiori⁶, T. Niwa⁶, K. Okumura⁶, H. Ooishi⁶, K. Yokoyama⁶ and S. Kubono⁷

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: a.s.demyanova@bk.ru

Published online: 20 March 2014

Abstract

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.

© Owned by the authors, published by EDP Sciences, 2014

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