  Critical exponents have been obtained for a 3D spin particle system. Clusters
are formed and system reaches a critical behavior when fragment size
distribution follows a power law, as predicted by Fisher Liquid Droplet Model.
Also, spontaneous magnetization critical temperature is in agreement with other
theoretical studies. System evolution is reproduced via a genetic algorithm
that performs minimal genetic fluctuations until a stationary state is
attained. Critical exponents are in the range of those belonging to Heavy Ion
collisions previously reported, and therefore belong to the same universality
class.
