- Conference date: 20-25 June 2005
- Location: Debrecen (Hungary)
The layout and status of MAFF at the Munich high flux reactor FRM‐II is described. At MAFF 1014 fissions/s will be induced by thermal neutrons in a target with approx. 1 g of 235U. The situation is compared to the SPIRAL2 facility where 1014 fissions/s are expected by fast neutron fission in a target containing 5100 g of 238U. A comparison of the yields of SPIRAL2 and MAFF is performed to show the complementarity of the two ISOL‐facilities for fission fragments. MAFF has approximately five times the beam intensities of SPIRAL2 for short‐lived fission isotopes with lifetimes shorter than 5 s and thus will focus on the most neutron‐rich nuclei, while SPIRAL2 has better perspectives for the more intense, less neutron‐rich post‐accelerated beams.
A problem that also deserves attention is the production of α emitters, in particular plutonium. Here MAFF has the advantage to contain the Pu‐producing 238U only as impurity not as the main fissile system. If SPIRAL2 would use 235U instead of 238U this problematic issue could be avoided at the cost of a further reduction in intensity of very neutron‐rich fission fragments by a factor of 10. Finally new physics close to the classically doubly‐magic nuclei 78 Ni and 132Sn is described.
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