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. Nörenberg^{1, 2}, G. Papp^{1, 3} and P. Rozmej<sup>1, 4

1</sup>  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

w.nrnbrg@gsi.de
pg@ludens.elte.hu
p.rozmej@if.uz.zgora.pl

(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.

PACS
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