Production of neutron-rich nuclei in fragmentation reactions of 132Sn projectiles at relativistic energies
nucl-ex
/ Authors
D. Pérez-Loureiro, J. Benlliure, H. Álvarez-Pol, B. Blank, E. Casarejos, D. Dragosavac, V. Föhr, M. Gascón, W. Gawlikowicz, A. Heinz
and 11 more authors
K. Helariutta, A. Kelić, S. Lukić, F. Montes, L. Pieńkowski, K-H. Schmidt, M. Staniou, K. Subotić, K. Sümmerer, J. Taieb, A. Trzcińska
/ Abstract
The fragmentation of neutron-rich 132Sn nuclei produced in the fission of 238U projectiles at 950 MeV/u has been investigated at the FRagment Separator (FRS) at GSI. This work represents the first investigation of fragmentation of medium-mass radioactive projectiles with a large neutron excess. The measured production cross sections of the residual nuclei are relevant for the possible use of a two-stage reaction scheme (fission+fragmentation) for the production of extremely neutron-rich medium-mass nuclei in future rare-ion-beam facilities. Moreover, the new data will provide a better understanding of the "memory" effect in fragmentation reactions.