Multi-dimensional fluctuation-dissipation dynamics of the synthesis of superheavy elements

✍ Scribed by T. Wada; Y. Aritomo; T. Tokuda; K. Okazaki; M. Ohta; Y. Abe

• Publisher: Elsevier Science
• Year: 1999
• Tongue: English
• Weight: 257 KB
• Volume: 654
• Category: Article
• ISSN: 0375-9474
• DOI: 10.1016/s0375-9474(00)88566-8

✦ Synopsis

We study the dynamical process of synthesizing superheavy elements on the basis of the fluctuation-dissipative dynamics with a multi-dimensional diffusion model. A multidimensional Langevin equation is used from the contact of two nuclei. After the dissipation of relative kinetic energy, a two-dimensional Smoluchowski equation is adopted taking into account the temperature dependent shell correction energy. The fusion probability is large for high incident energies. For low incident energies, owing to the restoration of the shell correction energy, the survival provability against fission is large. The competition between the two factors results in the optimum energy at 20-30 MeV. A three-dimensional model is used for the treatment of mass-asymmetric incident channels.