1. Secondary Minima and Non-axial Saddles in Superheavy (Z around 120) Introduction Method ot the analysis Deformation space Results Summary P. Jachimowicz, M. Kowal, J. Skalski P. Jachimowicz, M. Kowal, J. Skalski Nuclear Physics Workshop Nuclear Physics Workshop 23-27. 09. 2009 Kazimierz Dolny

2. Future experiments Reactions leading to elements around Z=120 (Dubna-Oak Ridge): Possible beams (Dubna,GSI?):

3. Method of calculations Microscopic energy: Woods-Saxon single-particle potential (universal parameters) Pairing approximationPairing approximation: BCS Strutinski shell correctionStrutinski shell correction Yukawa-plus-exponential modelYukawa-plus-exponential model

4. Shape parametrizations

5. Potential energy (10-dim minimization) Bf (MM - Presnent nonaxial calc.) = 4,5 MeV Bf (HF+BCS nonaxial calc. Staszczak et. al. IJMP 2005) =12 MeV

6. Fission Path GS SP A B C D E F

9. A (spherical)B(G.S.)E(S.P)F

12. Fission barrier heights

13. Cross sections v.s fission barriers THEORY: EXPERIMENT: Yu.Ts. Oganessian, V.K. Utyonkov et al.