On-line production of neutron rich isotopes from uranium carbide targetsV. Rizzi, A.L. Lanchais and G. Lehrsonneau
INFN, Laboratori Nazionali di Legnaro, viale dell'Università 2, 35020 Legnaro (Pd), Italy
(Received: January 31, 2007 / Published online: 8 December 2007)
Experiments done using on-line mass separation of neutron-rich nuclei produced by 1 GeV proton beam on natural U by spallation reactions are performed to study the characteristics of different UCx targets. Special attention is devoted to reliably extract isotopic yields in case of complex decay schemes and to the valuation of release efficiency of some isotopic chains. New gamma-branching measuremet for 92Rb are obtained. In addition, a formalism is developed to disantangle the contribution of -decay in the target from direct production by fission and to provide more consistent data for the interpretation of release curves. Some results are shown for the Cs and Rb isotopic chains.
25.40.Sc - Spallation reactions.
29.25.Rm - Sources of radioactive nuclei.
© EDP Sciences, Springer-Verlag 2007