Title: Low-lying states and structure of the exotic He-8 via direct reactions on the proton
Authors: Skaza, F ×
Lapoux, V
Keeley, N
Alamanos, N
Auger, F
Beaumel, D
Becheva, E
Blumenfeld, Y
Delaunay, F
Drouart, A
Gillibert, A
Giot, L
Khan, E
Nalpas, L
Pakou, A
Pollacco, E
Raabe, Riccardo
Roussel-Chomaz, P
Rusek, K
Scarpaci, J-A
Sida, J-L
Stepantsov, S
Wolski, R #
Issue Date: May-2007
Publisher: North Holland Pub. Co.
Series Title: Nuclear Physics A vol:788 pages:260C-265C
Conference: International Conference on Collective Motion in Nuclei Under Extreme Conditions edition:2 location:St Goar, GERMANY date:JUN 20-23, 2006
Abstract: The structure of the light exotic nucleus He-8 was investigated using direct reactions of the He-8 SPIRAL beam on a proton-rich target. The (p,p') scattering to the 2(1)(+) state, the (p,d)He-7 and (p,t)He-6 transfer reactions, were measured at the energy El,,(lab) = 15.7 A.MeV. The light charged particles (p,d,t) were detected in the MUST Si-strip telescope array. The excitation spectrum of He-8 was extracted from the (p,p') reaction. Above the known 2(1)(+) excited state at 3.6 MeV, a second resonance was found around 5.4 MeV. The cross sections were analyzed within the coupled-reaction channels framework, using microscopic potentials. It is inferred that the 8He ground state has a more complex neutron-skin structure than suggested by previous a + 4n models assuming a pure (1p(3/2))(4) configuration.
ISSN: 0375-9474
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Nuclear and Radiation Physics Section
× corresponding author
# (joint) last author

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