Köln 2004 – wissenschaftliches Programm
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HK: Physik der Hadronen und Kerne
HK 47: Heavy Ions V
HK 47.7: Vortrag
Donnerstag, 11. März 2004, 18:30–18:45, E
Non-equilibrium and Asymmetry Effects in Intermediate Energy Heavy Ion Collisions* — •Th. Gaitanos1,2, Chr. Fuchs3, R.-A. Ionescu4, and H.H. Wolter1 — 1Sektion Physik, Univ. of Munich — 2LNS, INFN, Catania — 3Inst. Theor. Physik, Univ. Tübingen — 4NIPNE, Bucharest
An important motivation for the investigation of intermediate
energy heavy ion collisions is to determine the equation-of-state
of nuclear matter, and, in view of the interest in isospin
phenomena, in particular of asymmetric nuclear matter.
However, non-equilibrium
effects are important in such collisions, as evidenced by
non-spherical momentum distributions during an essential part
of the collision. We have previously
discussed these effects in terms of 2-Fermi-sphere
(colliding nuclear matter, CNM)
configurations. We have extended this model to asymmetric CNM
(ACNM) configurations to take into account asymmetry effects.
In parallel
we also investigate explicit momentum dependence in a
1-Fermi-sphere configuration and compare the two methods of
treating momentum dependence. We investigate in particular
double
differential flow effects as a function of rapidity
and transverse
momentum and compare to recent data of the FOPI collaboration.
* supported by BMFT, grant 06 LM 981.