Stability and instability of a hot and dilute nuclear droplet

Details Stability and instability of a hot and dilute nuclear droplet Stability and instability of a hot and dilute nuclear droplet

2000-09-04

arxiv.org/abs/nucl-ex/0009002v1

Eur.Phys.J. A9 (2000) 327-343

Physics

Nuclear Physics

Nuclear Experiment

17 pages, 11 figures, LaTeX2e, EPJA style (included)

Scientific paper

10.1007/s100500070017

The diabatic approach to collective nuclear motion is reformulated in the local-density approximation in order to treat the normal modes of a spherical nuclear droplet analytically. In a first application the adiabatic isoscalar modes are studied and results for the eigenvalues of compressional (bulk) and pure surface modes are presented as function of density and temperature inside the droplet, as well as for different mass numbers and for soft and stiff equations of state. We find that the region of bulk instabilities (spinodal regime) is substantially smaller for nuclear droplets than for infinite nuclear matter. For small densities below 30% of normal nuclear matter density and for temperatures below 5 MeV all relevant bulk modes become unstable with the same growth rates. The surface modes have a larger spinodal region, reaching out to densities and temperatures way beyond the spinodal line for bulk instabilities. Essential experimental features of multifragmentation, like fragmentation temperatures and fragment-mass distributions (in particular the power-law behavior) are consistent with the instability properties of an expanding nuclear droplet, and hence with a dynamical fragmentation process within the spinodal regime of bulk and surface modes (spinodal decomposition).

Affiliated with

Also associated with

No associations

Rating

Stability and instability of a hot and dilute nuclear droplet does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Stability and instability of a hot and dilute nuclear droplet, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stability and instability of a hot and dilute nuclear droplet will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-487152