Heavy Ion Collisions 



Collision of two uranium nuclei at 23 GeV/nucleon


It is a great challenge to understand the processes, which led to the creation of the physical world around us. In the Big Bang theory, a singularity in time started the existence of our universe, its evolution thereafter being determined by physical processes that occur in different time scales.

Baryonic genesis, the formation of baryonic matter, is believed to have formed on a time scale of 10 to 20 microseconds after the beginning. The Understanding of the behaviour of baryonic matter is of central importance since baryonic matter serves as a building block of all the atoms we know today.

The only way of studying baryonic genesis in the laboratory is by means of high-energy heavy-ion collisions. In such collisions, nuclear matter is produced at high density and high temperature, and thus creating the physical environment necessary for the study of those phenomena that appeared in the early universe.

 Our Laboratory participates in the international HADES collaboration at GSI Darmstadt/Germany. The HADES project represents a major scientific program of GSI, and is unique worldwide with respect to both its innovative technical design and physics questions addressed.
(See for details: http://www-np.ucy.ac.cy/HADES/title/hadestitle.html)

Click here to start a  UrQMD  simulation, Au + Au; 1.5 AGeV; b=5 fm
by Henning Weber, Univ. of  Frankfurt).