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Directed and elliptic flow in $^{197}$Au+$^{197}$Au at intermediate energies

Abstract : Directed and elliptic flow for the $^{197}$Au+$^{197}$Au system at incident energies between 40 and 150 MeV per nucleon has been measured using the INDRA 4$\pi$ multi-detector. For semi-central collisions, the excitation function of elliptic flow shows a transition from in-plane to out-of-plane emission at around 100 MeV per nucleon. The directed flow changes sign at a bombarding energy between 50 and 60 MeV per nucleon and remains negative at lower energies. Molecular dynamics calculations (CHIMERA) indicate sensitivity of the global squeeze-out transition on the $\sigma$ and demonstrate the importance of angular momentum conservation in transport codes at low energies.
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Contributor : Michel Lion <>
Submitted on : Friday, January 5, 2007 - 2:50:19 PM
Last modification on : Wednesday, September 16, 2020 - 4:08:37 PM

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J. Lukasik, G. Auger, M.L Begemann-Blaich, N. Bellaize, R. Bittiger, et al.. Directed and elliptic flow in $^{197}$Au+$^{197}$Au at intermediate energies. Acta Physica Hungarica, 2006, 25, pp.229-239. ⟨10.1556/APH.25.2006.2-4.11⟩. ⟨in2p3-00122885⟩



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