Azimuthal Anisotropies as Stringent Test for Nuclear Transport Models

Details Azimuthal Anisotropies as Stringent Test for Nuclear Transport Models Azimuthal Anisotropies as Stringent Test for Nuclear Transport Models

1997-09-15

arxiv.org/abs/nucl-ex/9709004v1

Nucl.Phys. A627 (1997) 522-542

Physics

Nuclear Physics

Nuclear Experiment

26 pages Revtex, 7 ps-figures, to appear in Nucl.Phys.A

Scientific paper

10.1016/S0375-9474(97)00509-5

Azimuthal distributions of charged particles and intermediate mass fragments emitted in Au+Au collisions at 600AMeV have been measured using the FOPI facility at GSI-Darmstadt. Data show a strong increase of the in-plane azimuthal anisotropy ratio with the charge of the detected fragment. Intermediate mass fragments are found to exhibit a strong momentum-space alignment with respect of the reaction plane. The experimental results are presented as a function of the polar center-of-mass angle and over a broad range of impact parameters. They are compared to the predictions of the Isospin Quantum Molecular Dynamics model using three different parametrisations of the equation of state. We show that such highly accurate data provide stringent test for microscopic transport models and can potentially constrain separately the stiffness of the nuclear equation of state and the momentum dependence of the nuclear interaction.

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