Eur. Phys. J. A 14, 43-51 (2002)
DOI: 10.1140/epja/iepja1369
Stability and instability of a hot and dilute nuclear droplet
II. Dissipative isoscalar modes
W. Nörenberg1, 2, G. Papp1, 3 and P. Rozmej1, 41 Gesellschaft für Schwerionenforschung, D-64291 Darmstadt, Germany
2 Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
3 HAS Research Group for Theoretical Physics, Eötvös University, H-1117 Budapest, Hungary
4 Institute of Physics, University of Zielona Góra, Pl-65246 Zielona Góra, Poland
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(Received: 10 January 2002 Communicated by P. Schuck)
Abstract
Results on dissipative isoscalar modes of a hot and dilute nuclear droplet are presented.
As compared to the adiabatic limit (part I), realistic dissipation yields a substantial reduction
of the growth rates for all unstable modes,
while the area of spinodal instability in the (
,
T)-plane remains unchanged.
The qualitative features of multifragmentation through spinodal decomposition as obtained
in the adiabatic limit are
not significantly affected by dissipation.
21.60.Ev - Collective models.
21.65.+f - Nuclear matter.
25.70.Mn - Projectile and target fragmentation.
25.70.Pq - Multifragment emission and correlations.
© Società Italiana di Fisica, Springer-Verlag 2002
