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HK: Physik der Hadronen und Kerne

HK 33: Heavy Ions III

HK 33.3: Talk

Wednesday, March 10, 2004, 15:00–15:15, E

INDRA@GSI : Collective Flow in Au+Au Collisions — •Jerzy Lukasik — GSI, Planckstr. 1, D-64291 Darmstadt

Directed and elliptic flow in symmetric heavy ion collisions has been studied using the ¹⁹⁷Au + ¹⁹⁷Au reactions at incident energies between 40 and 150 AMeV. The reactions have been measured with the 4π 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 AMeV in good agreement with the result obtained by the FOPI Collaboration. The new data allows also to extend the experimental excitation function of v₂ to lower energies and to present it for isotopically resolved light species.