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Reactions with the double-Borromean nucleus 8He

Abstract : Differential cross sections for elastic-scattering and neutron-transfer reactions along with cross sections for fusion in the 8He+65Cu system are reported at energies above the Coulomb barrier (Elab = 19.9 and 30.6 MeV). The present work demonstrates the feasibility of using inclusive measurements of characteristic in-beam γ rays with low-intensity (∼105 pps) radioactive ion beams to obtain the residue cross sections for fusion and neutron transfer. Exclusive measurements of γ rays in coincidence with light charged particles have been used to further characterize the direct reactions induced by this double-Borromean nucleus. Coupled reaction channels calculations are used to illustrate the important role played by the transfer channels and to help in understanding the influence of the structure of 8He on the reaction mechanism.
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Submitted on : Wednesday, November 3, 2010 - 12:33:31 PM
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A. Lemasson, A. Navin, N. Keeley, M. Rejmund, S. Bhattacharyya, et al.. Reactions with the double-Borromean nucleus 8He. Physical Review C, American Physical Society, 2010, 82, pp.044617. ⟨10.1103/PhysRevC.82.044617⟩. ⟨in2p3-00531199⟩

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