Naslov
Breakup reaction studies of 10Be and 10, 11B using a 10Be beam

Autori
Ahmed, S. ; Freer, M. ; Angélique, J. C. ; Ashwood, N. I. ; Bouchat, V. ; Catford, W. N. ; Clarke, N. M. ; Curtis, N. ; Hanappe, F. ; Lecouey, J. C. ; Marqués, F. M. ; Materna, T. ; Ninane, A. ; Normand, G. ; Orr, N. A. ; Pain, S. ; Soić, Neven ; Timis, C. ; Unshakova, A. ; Ziman, V. A.

Izvornik
Physical Review C (0556-2813) 69 (2004), 2; 024303-9

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
heavy ion-nucleus reactions; nuclear shell model; nuclei with mass number 6 to 19

Sažetak
The structure of 10Be has been investigated by inelastic scattering to states above the breakup threshold using the reaction 12C(10Be, 10Be*-->6He+4He)12C at Ebeam = 302 MeV. Excited states in 10Be were observed at 9.6&plusmn ; ; 0.1 and 10.2&plusmn ; ; 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.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA