Fission fragment anisotropies for 19F + 209Bi system
A.M. Samant2 - S. Kailas1 - A. Chatterjee1 - A. Shrivastava1 - A. Navin3 - P. Singh1
1 Nuclear Physics Division, Bhabha Atomic Research Centre, Bombay 400 085, India
2 I.N.F.N and Department of Physics, University of Padova, 35131, Padova, Italy
3 NSCL, Michigan State University, East Lansing, USA
Received: 5 May 1999 / Revised version: 25 July 1999 Communicated by C. Signorini
Abstract
The fission fragment angular distributions have been measured for the
system 19F + 209Bi over a range of bombarding energies
from 88.0 MeV to 125.6 MeV. The measured fission fragment
anisotropies are in agreement with the saddle point statistical model
calculations in the above energy range. Combining these data
with those available for 11B, 12C, 14N, 16O
and 18O + 209Bi, 208Pb systems, it is concluded that
the spherical target plus projectile systems behave `normal,
from near- to above - barrier energies. This observation is in
contrast to the `anomalous, anisotropies exhibited by the deformed
actinide target - projectile systems at near - barrier energies.
PACS
25.70.Jj Fusion and fusion-fission reactions
Copyright Società Italiana di Fisica, Springer-Verlag 2000
