Multi-neutron transfer coupling in sub-barrier 32S + 90,96Zr fusion reactions
Institut Pluridisciplinaire Hubert Curien, UMR 7178,
CNRS-IN2P3 and Université de Strasbourg, B.P. 28, F-67037
Strasbourg Cedex 2,
2 China Institute of Atomic Energy (CIAE), 102413 Beijing, China
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The role of neutron transfers is investigated in the fusion process below the Coulomb barrier by analyzing 32S+90Zr and 32S+96Zr as benchmark reactions. A full coupled-channel calculation of the fusion excitation functions has been performed for both systems by using multi-neutron transfer coupling for the more neutronrich reaction. The enhancement of fusion cross sections for 32S+96Zr is well reproduced at sub-barrier energies by NTFus code calculations including the coupling of the neutron-transfer channels following the Zagrebaev semiclassical model. We found similar effects for 40Ca+90Zr and 40Ca+96Zr fusion excitation functions.
© Owned by the authors, published by EDP Sciences, 2011