Heavy-Ion Reactions

Hadronization in Heavy-ion Reactions

We present a model of fast hadronization of constituent quark matter in relativistic heavy ion collisions based on rate equations and capture cross sections in non-relativistic potential. We utilize a thermodynamically consistent approach with a non-ideal equation of state including correlation terms based on string phenomenology. We investigate strange and non-strange particle ratios observed ...

Nuclear Fragmentation Reactions and Heavy-Ion Therapy

Thermodynamical Characterization of Heavy Ion Reactions

An detailed study of the thermodynamical state of nuclear matter in transport calculations of heavy–ion reactions is presented. In particular we determine temperatures from an analysis of the local momentum space distribution on one hand, and from a fit to fragment energy spectra in terms of a blast model with radial flow and temperature on the other. We apply this to spectator and participant ...

The Vector Probe in Heavy-Ion Reactions

We review essential elements in using the J = 1− channel as a probe for hot and dense matter as produced in (ultra-) relativistic collisions of heavy nuclei. The uniqueness of the vector channel resides in the fact that it directly couples to photons, both real and virtual (dileptons), enabling the study of thermal radiation and in-medium effects on both light (ρ, ω, φ) and heavy (Ψ,Υ) vector m...

Kaon squeeze-out in heavy ion reactions

The squeeze-out phenomenon of K and K− mesons, i.e. the azimuthal asymmetry of K and K− mesons emitted at midrapidity in heavy ion reactions, is investigated for beam energies of 1-2 A.GeV. It is found that the squeeze-out signal is strongly affected by in-medium potentials of these mesons. The repulsive K-nucleus potential gives rise to a pronounced out-of-plane emission of K’s at midrapidity....