Peculiarities of Nuclear Fusion in Synthesis of Superheavy Elements
A. K. NasirovHeavy Ion Physics Department , Institute of Nuclear PhysicsG. GiardinaINFN, Sezione di Catania, and Dipartimento di Fisica dell'Universita di MessinaA. I. MuminovHeavy Ion Physics Department , Institute of Nuclear PhysicsG. MandaglioINFN, Sezione di Catania, and Dipartimento di Fisica dell'Universita di MessinaR UtamuratovHeavy Ion Physics Department , Institute of Nuclear Physics
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Annotatsiya
The role of entrance channel for reactions with massive nuclei is discussed by comparison of experimental data of reactions with different mass (charge) asymmetry and leading to different isotopes of the superheavy element Z = 112. Three stages (capture, complete fusion, and formation of evaporation residues) of the so called “cold” and “hot” fusion reactions are considered for 70Zn + 208Pb and 48Ca + 238U reactions which were used to synthesize superheavy elements Z =112. It is shown that the collisions by the orientation angles 30°<αP< 60° for projectile and 30°<αT<45° for the target nucleus lead to the largest cross section in synthesis of superheavy element in the 48Ca + 238U reaction at E*CN = 35 MeV.
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