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Azimuthal anisotropies as stringent test for nuclear transport models

Abstract : 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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Contributor : Michèle Chadelas Connect in order to contact the contributor
Submitted on : Monday, April 26, 1999 - 1:03:38 PM
Last modification on : Wednesday, April 27, 2022 - 4:18:31 AM

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P. Crochet, F. Rami, R. Dona, J.P. Coffin, P. Fintz, et al.. Azimuthal anisotropies as stringent test for nuclear transport models. Nuclear Physics A, Elsevier, 1997, 627, pp.522-542. ⟨in2p3-00001807⟩

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