Freeze-out in ultra-relativistic heavy-ion collisions

Abstract

I discuss the effects and quantities that influence the decoupling of particles from the fireball. The crucial role is played by the scattering rate. I show the results for the scattering rate at SPS and RHIC and discuss their implications.

Comments: 5 pages, 2 figures, proceedings of SEWM 2002, October 2-5, Heidelberg, Germany