Caloric curve in fragmentation

We study phase transitions of small two dimensional Lennard Jones drops viamicrocanonical molecular dynamics in a broad energy range. We found that thecaloric curve can be extended to high energies to comprehend high evaporationrates and highly non-equilibrium phenomena such as multifragmentation.Multifragmentation appears as a constant temperature region in the caloriccurve like the solid-liquid phase transition.Comment: 14 pages, 3 figure