Production of 100 Sn in fusion reactions via cluster emission channels
The possibilities of production of the doubly magic nucleus 100 Sn in complete fusion and quasifission reactions with stable and radioactive ion beams are investigated within a dinuclear system model. The excitation functions for production of the exotic nuclei 100−103 Sn via cluster emission channels are predicted for future experiments.
Role of angular momentum in the production of complex fragments in fusion and quasifission reactions
The influence of angular momentum on the competition between complete fusion followed by the decay of compound nucleus and quasifission channels is treated within the dinuclear system model. The charge distributions of the products in the reactions {sup 28}Si+{sup 96}Zr, {sup 4}He+{sup 130}Te, and {sup 40}Ca+{sup 82}Kr are predicted at bombarding energies above the Coulomb barrier. The results of calculations for the reactions {sup 93}Nb+{sup 9}Be,{sup 12}C,{sup 27}Al; {sup 84}Kr+{sup 27}Al; {sup 86}Kr+{sup 63}Cu; {sup 139}La+{sup 12}C,{sup 27}Al; and {sup 45}Sc+{sup 65}Cu are compared with the available experimental data.
Stability of 10050Sn50 deduced from excited states in 9948Cd51.
Cr material was enriched to 96.8% andevaporated onto an Au backing, which was thick enoughto stop all evaporation residues from reactions on Cr.The most interesting neutron deﬁcient and unknownresidual nuclei are formed in less than 1% of the totalpopulation. Thus, besides an efﬁcient g-ray detectorarray, a very high reaction channel selectivity is neededfor the identiﬁcation of unknown nuclei. A techniquebased on the detection of g rays in coincidence withevaporated charged particles and neutrons was used toselect the residual nuclei.The NORDBALL detector array consisted of 15 BGOshielded Ge detectors with a total photopeak efﬁciencyof about 1%. Light charged particles were detectedin 21 D