Production of neutron-rich nuclei in fission induced by neutrons generated by the reaction at 55 MeVL. Stroe1, G. Lhersonneau1, A. Andrighetto1, P. Dendooven2, J. Huikari2, H. Penttilä2, K. Peräjärvi2, L. Tecchio1 and Y. Wang2
1 INFN, Laboratori Nazionali di Legnaro, 35020 Legnaro, Padova, Italy
2 Department of Physics, University of Jyväskylä, P.O. Box 35, 40351-Jyväskylä, Finland
(Received: 8 November 2002 / Revised version: 19 December 2002 / Published online: 15 April 2003)
Cross-sections for the production of neutron-rich nuclei obtained by neutron-induced fission of natural uranium have been measured. The neutrons were generated by bombarding a 13C target with 55 MeV protons. The results, position of the maximum in the (Z,A)-plane, width and magnitude, are very comparable with those where the neutrons are generated by bombardment of natural 12C graphite with 50 MeV deuterons. Depending on the geometry of the converter/target assembly the isotope yields, however, are a factor of 2-3 lower due to less efficient production of neutrons per primary projectile, especially at small forward angles.
24.75.+i - General properties of fission.
25.85.Ec - Neutron-induced fission.
© Società Italiana di Fisica, Springer-Verlag 2003