Searching for critical phenomena in nuclear fragmentation

摘要

The dynamics of a fragmenting fintie system can be well modeled by Clasical Molecular Dynamics (CMD). Of course in such studies we are not interested in repro-ducing the data coming from nucleus-nucleus collisiosn but simply in the possibility that a finite charged system "remembers" of a liquid to gas phase transition which occurs in the infinite case limit.~1 Classical particles interacting through a short range repulsive interaction and a logner range attractive one have an Equation of State (EOS) which resembles a Van Der Waals (VDW)~1,2 It is also well known that the Nuclear EOS resembles a VDW as well,~3 thus classical studies of the instability region are quite justyfied in order to understand the finite size plus Coulomb efffects.