Treatment of competition between complete fusion and quasifission in collisions of heavy nuclei

• Published in: Nuclear physics. A Vol. 627; no. 2; pp. 361 - 378
• Main Authors: Adamian, G.G., Antonenko, N.V., Scheid, W., Volkov, V.V.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 15-12-1997
• Subjects: Complete fusion; Compound nucleus; Quasifission; Superheavy elements; 24.10.−i; 24.60.−k; Complete fusion; Quasifission; Compound nucleus; 25.70.Jj; Superheavy elements
• ISSN: 0375-9474
• DOI: 10.1016/S0375-9474(97)00605-2

A model of competition between complete fusion and quasifission channels in fusion of two massive nuclei is extended to include the influence of dissipative effects on the dynamics of nuclear fusion. By using the multidimensional Kramers-type stationary solution of the Fokker-Planck equation, the fusion rate through the inner fusion barrier in mass asymmetry is studied. Fusion probabilities in symmetric
90Zr+
90Zr,
100Mo+
100Mo,
110Pd+
110Pd,
136Xe+
136Xe, almost symmetric
86Kr+
136Xe and
110Pd+
136Xe reactions are calculated. An estimation of the fusion probabilities is given for asymmetrical
62Ni+
208Pb,
70Zn+
208Pb,
82Se+
208Pb, and
48Ca+
244Pu reactions used for the synthesis of new superheavy elements.