Entropy generation and hydrodynamic flow in relativistic heavy ion collisions

The spectra of pions, protons, and deuterons from collisions of Ar on KCl at a beam energy of 800 MeV per nucleon have been computed in a conventional hydrodynamic approach. Extreme softening of the finite temperature form of the nuclear equation of state leads to significant differences in the number of emitted particles of each species, although there is still too little entropy and too few pions produced as compared with experiment. NUCLEAR REACTIONS Hydrodynamic calculations, spectra of, p, d; Ar + KCl, 800 MeV/A; entropy, equation of state.