| アブストラクト: |
The creation of a short-lived quark-gluon plasma that corresponds to
the initial state in the evolution of the universe is an important
goal in relativistic heavy-ion research. Collisions between heavy
nuclei from SIS to RHIC energies are investigated in this talk based
on a nonequilibrium-statistical Relativistic Diffusion Model (RDM). It
allows for analytical calculations of rapidity and transverse momentum
distributions of both participant nucleons, and produced particles. By
comparing the RDM-results to recent data conclusions about the
magnitude of the collective expansion velocity of the system, the
amount of local equilibration, and of deconfinement can be drawn.
In the Au+Au system at the highest RHIC energy of √sNN =200 GeV,
about 14 per cent of the partons contained in the incoming baryons are
likely to be deconfined in central collisions. A comparison with the
d+Au system is presented. Here, the equilibrated midrapidity region is
shown to be much less important in the rapidity spectra of produced
charged particles.
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