Multifragmentation at Intermediate Energy: Dynamics or Statistics?
  To make a statement about the nature and mechanism of fragmentation, it is necessary to probe directly any competition, or lack thereof, between the emission of various particle species as a function of excitation energy. The task is then to find a global observable that best follows the increase in excitation energy or dissipated energy. In the following, we will consider two contradictory claims that have been advanced recently: 1) the claim for a predominantly dynamical fragment production mechanism; and 2) the claim for a dominant statistical and thermal process. We will present a new analysis in terms of Poissonian reducibility and thermal scaling, which addresses some of the criticisms of the binomial analysis. 
L. Beaulieu, L. Phair, L.G. Moretto, and G.J. Wozniak (Nuclear Science   Division Lawrence Berkeley National Laboratory)