Theory of fusion for superheavy elements |
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| Authors: | Y Abe C W Shen G I Kosenko D Boilley |
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| Institution: | (1) Yukawa Institute for Theoretical Physics, Kyoto University, Japan;(2) Department of Nuclear Physics, China Institute of Atomic Energy, Beijing, China;(3) Laboratori Nazionale di Sud, INFN, Catania, Italy;(4) RIKEN, Wako, Saitama, Japan;(5) Department of Physics, University of Omsk, Omsk, Russia;(6) GANIL, Caen, France |
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| Abstract: | A new model is proposed for fusion mechanisms of massive nuclear systems, where so-called fusion hindrance exists. The model describes the whole process in two steps: two-body collision processes in an approaching phase and shape evolutions of an amalgamated system into the compound nucleus formation. It is applied to 48Ca-induced reactions and is found to reproduce the experimental fusion cross sections extremely well, without any free parameter. A schematic case is solved in an analytic way, the results of which shed light on fusion mechanisms. Combined with statistical decay theory, residue cross sections for superheavy elements can be readily calculated. Examples are given. |
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