INDRA@GSI: collective flow in Au plus Au collisions

J Lukasik, W Trautmann, G Auger,ML Begemann-Blaich, N Bellaize, R Bittiger, F Bocage,B Borderie,R Bougault, B Bouriquet,JL Charvet,A Chbihi,R Dayras,D Durand,JD Frankland, E Galichet,D Gourio,D Guinet,S Hudan, B Hurst, P Lautesse, F Lavaud,A Le Fevre, R Legrain,O Lopez,U Lynen,WFJ Muller, L Nalpas,H Orth,E Plagnol,E Rosato,A Saija, C Sfienti, C Schwarz,JC Steckmeyer,B Tamain, A Trzcinski, K Turzo,E Vient, M Vigilante, C Volant,B Zwieglinski

Progress in Particle and Nuclear Physics（2004）

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摘要

Directed flow in symmetric heavy ion collisions has been studied using the Au-197 + Au-197 reactions at incident energies between 40 and 150 A MeV. The reactions have been measured with the 4pi multi-detector INDRA at the GSI facility. In particular, the bombarding energy at which the elliptic flow switches from in-plane to out-of-plane enhancement has been determined to be clearly above 100 A MeV in good agreement with the result obtained by the FOPI Collaboration. The new data also allows to extend the experimental excitation function of v(2) to lower energies. (C) 2004 Elsevier B.V. All rights reserved.

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关键词

sideward and elliptic flow,intermediate energy heavy ion collisions

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