Dissipative dynamics of fission in the framework of asymptotic expansion of Fokker-Planck equation
A.K. Dhara - S. Bhattacharya - K. Krishan
Variable Energy Cyclotron Centre, 1/AF Bidhan Nagar, 700064 Calcutta, India
Received: 8 September 1999 / Revised version: 22 November 1999 Communicated by P. Schuck
Abstract
The dynamics of fission has been formulated by generalising the
asymptotic expansion of the Fokker-Planck equation in terms of the
strength of the fluctuations where the diffusion coefficients depend on
the stochastic variables explicitly. The prescission neutron multiplicities
and mean kinetic energies of the evaporated neutrons have been calculated
and compared with the respective experimental data over a wide range of
excitation energy and compound nuclear mass.
The mean and the variance of the
total kinetic energies of the fission fragments have been calculated and
compared with the experimental
values.
PACS
25.70.Jj Fusion and fusion-fission reaction -
25.70.Gh Compound nucleus
Copyright Società Italiana di Fisica, Springer-Verlag 2000
