Transverse Velocity Scaling in Au+Au Fragmentation
  Invariant transverse-velocity spectra of intermediate-mass fragments were measured with the 4-pi multi-detector system INDRA for collisions of Au on Au at incident energies between 40 and 150 MeV per nucleon. Their scaling properties as a function of incident energy and atomic number Z are used to distinguish and characterize the emissions in (i) peripheral collisions at the projectile and target rapidities, and in (ii) central and (iii) peripheral collisions near mid-rapidity. The importance of dynamical effects is evident in all three cases and their origin is discussed. 
J. Lukasik, S. Hudan, F. Lavaud, K. Turzo, G. Auger, Ch.O. Bacri, M.L.   Begemann-Blaich, N. Bellaize, R. Bittiger, F. Bocag...