par Ahmed, Shabbir;Freer, Martin;Ashwood, N.I.;Clarke, Nicholas;Curtis, N.;Soić, Neven;Ziman, V.A.;Catford, Wilton;Pain, Steven;Timis, C.N.;Angélique, Jean Claude;Lecouey, J.C. J.C.;Marqués, Francisco Miguel;Normand, G.;Orr, Nigel;Bouchat, Virginie;Hanappe, Francis 
;Materna, Thomas ;Unshakova, A.;Ninane, A.
Référence Physical review. C. Nuclear physics, 69, 2, page (243031-243039)
Publication Publié, 2004-02
;Materna, Thomas ;Unshakova, A.;Ninane, A.Référence Physical review. C. Nuclear physics, 69, 2, page (243031-243039)
Publication Publié, 2004-02
Article révisé par les pairs
| Résumé : | The structure of 10Be has been investigated by inelastic scattering to states above the breakup threshold using the reaction 12C(10Be,10Be* → 6He+4/He)12C at Ebeam=302 MeV. Excited states in 10Be were observed at 9.6±0.1 and 10.2±0.1 MeV. No evidence was observed for the population of the 4 + member of the ground-state band of 10Be indicating the shell-model-like structure of the ground state. In addition, the decay of 8Be, 10B, and 11B, populated in the two-neutron, proton pickup, breakup and 1p pickup reactions, was reconstructed through the detection of coincident 4He+4He, 4He+6Li, and 4He+7Li particles. Cross sections for the formation of the 8Be, 9Be, 10B, and 11B were also deduced. Contrary to expectations, the two-neutron removal results in the production of 8Be predominantly (80%) in the first excited (2+) state. This suggests that dynamical excitations play an important role in the neutron removal process. |
