Lecturer: Caiwan Shen (China Institute of Atomic Energy, China)

Title:  Dynamical Calculation of Residue Cross Section
        for Superheavy Elements

Date:   9/17/2001 (Mon.) 15:00 -

Place:  RIKEN Main Bldg. 1F Seminar Room

                           The seminar will be given in English.

Abstract:
We used compound nucleus theory of reaction to calculate the residue
cross sections of superheavy elements. In the calculation,
the reaction process is divided to two independent stages, fusion and
fission. In the fusion stage, fluctuation-dissipation dynamics are
introduced to describe the fusion probability which includes
the sticking probability by surface friction model and formation
probability by two center liquid drop model. In the fission stage,
the standard statistical model is used. With this theory, some heavy
nuclear reaction systems are calculated and  discussed.