Eur. Phys. J. A 14, 37-42 (2002)
Enhanced excitation of giant pairing vibrations in heavy-ion reactions induced by weakly bound projectilesL. Fortunato1, W. von Oertzen2, H.M. Sofia3 and A. Vitturi1
1 Dipartimento di Fisica and INFN, Padova, Italy
2 Hahn Meitner Institute, Berlin, Germany
3 Comisión Nacional de Energía Atómica and CONICET, Buenos Aires, Argentina
(Received: 30 November 2001 / Revised version: 15 February 2002 Communicated by P. Schuck)
The use of radioactive ion beams is shown to offer the possibility to study collective pairing states at high excitation energy, which are not usually accessible with stable projectiles because of large energy mismatch. In the case of two-neutron stripping reactions induced by 6He, we predict a population of the giant pairing vibration in 208Pb or 116Sn with cross-sections of the order of a millibarn, dominating over the mismatched transition to the ground state.
21.60.Ev - Collective models.
25.60.Je - Transfer reactions.
© Società Italiana di Fisica, Springer-Verlag 2002