Inverse Kramers formula and fusion dynamics of heavy ions
GANIL, BP 55027, F-14076, Caen cedex, France
2 Yukawa Institute for Theoretical Physics, Kyoto University, 606-8502, Kyoto, Japan
3 Department of Physics, Beijing Normal University, 100875, Beijing, PRC
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Fusion probability of colliding heavy ions is evaluated by exactly solving a Langevin equation with a parabolic potential barrier. The model, which accommodates dissipation in the approaching phase, leads to an inverse Kramers formula and an expression of the extra-push energy. In the very specific case of an overdamped regime, an Arrhenius-type formula is obtained.
© Società Italiana di Fisica and Springer-Verlag, 2003