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Experiment SHIP: Fusion without “extrapush“

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1 Experiment SHIP: Fusion without “extrapush“
ECM,exp = 238.2 236.2 235.2 |Q| = 224.1 E*(exp) = 12.1 MeV 14.1 fm Coulomb Potential

2 Experiment SHIP: Fusion without extrapush
Fusion (initiated) by transfer: V. Volkov et al., W. Von Oertzen et al. Cold fusion valleys: W. Greiner et al. Two center shell model: U. Mosel et al.

3 Excitation functions GSI-SHIP FLNR-DGFRS 50Ti, 54Cr, 58Fe, 64Ni, 70Zn
+ 208Pb GSI-SHIP FLNR-DGFRS 48Ca + 233U, 238U, 242Pu, 244Pu, 245Cm

4 Fusion with deformed target nuclei
P. Möller, 2001

5 Calculation of cross-sections
Neutron evaporation Compound- fission Quasi- fission A.K. Nasirov, G. Giardina et al., (2000)

6 Extension of the Chart of Nuclei
48Ca + X Cf Cm Am Pu Np U X Sr Kr Se Ge Zn Ni Fe Cr Ti Ca X X X + 208Pb, 209Bi proton number neutron number

7 Results at FLNR Dubna 85 chains 34 isotopes 5 new elements 48Ca + X
Sr Kr Se Ge Zn Ni Fe Cr Ti Ca X Cf Cm Am Pu Np U X 48Ca + X X + 208Pb, 209Bi Protonenzahl 85 chains 34 isotopes 5 new elements Neutronenzahl

8 Transport and adsorption specific for element 112
Lanthaniden Actiniden R. Eichler, H. Gäggeler et al., May 2006 at FLNR Nature 447, 72 (2007) +112 –108 boiling point: (357 ) K

9 Identical data: 48Ca + 238U SHIP mean values, FLNR mean values, 4 ev.
291116 287114 S. Hofmann et al., Eur. Phys. J. A32, 251 (2007) σ = − 1.1 pb (DGFRS) σ = − 0.6 pb (SHIP, 238Umetal) Yu.Ts. Oganessian et al., Phys. Rev. C74, (2006)

10 Important results: Growing T1/2 at constant σ
σ = 0.5 – 5 pb T1/2 = 1 ms 10 s

11 Mutual relation Cross-sections Fission barriers EXPERIMENT:
Yu.Ts. Oganessian, V.K. Utyonkov et al. Fission barriers THEORY: A. Sobiczewski et al.


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