Collective Flow Observed in Relativistic Nuclear Collisions
H.-Å. GustafssonGesellschaft fur Schwerionenforschung, Darmstadt, West Germany, and Nuclear Science Division, Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720H.H. GutbrodGesellschaft fur Schwerionenforschung, Darmstadt, West Germany, and Nuclear Science Division, Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720B. W. KolbGesellschaft fur Schwerionenforschung, Darmstadt, West Germany, and Nuclear Science Division, Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720H. LöhnerGesellschaft fur Schwerionenforschung, Darmstadt, West Germany, and Nuclear Science Division, Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720Bernhard LudewigtGesellschaft fur Schwerionenforschung, Darmstadt, West Germany, and Nuclear Science Division, Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720A. M. PoskanzerGesellschaft fur Schwerionenforschung, Darmstadt, West Germany, and Nuclear Science Division, Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720Tanya RennerGesellschaft fur Schwerionenforschung, Darmstadt, West Germany, and Nuclear Science Division, Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720H. RiedeselGesellschaft fur Schwerionenforschung, Darmstadt, West Germany, and Nuclear Science Division, Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720H. G. RitterGesellschaft fur Schwerionenforschung, Darmstadt, West Germany, and Nuclear Science Division, Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720A. WarwickGesellschaft fur Schwerionenforschung, Darmstadt, West Germany, and Nuclear Science Division, Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720F. WeikGesellschaft fur Schwerionenforschung, Darmstadt, West Germany, and Nuclear Science Division, Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720H. WiemanGesellschaft fur Schwerionenforschung, Darmstadt, West Germany, and Nuclear Science Division, Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720
1984en
ABI
Annotatsiya
The reactions Ca + Ca and Nb + Nb at 400 MeV/nucleon have been studied at the Bevalac using the "Plastic Ball" spectrometer. A global analysis of the events shows two nontrivial collective flow effects: the bounceoff of the projectile fragments, and the side-splash of the intermediate-rapidity fragments for the higher-multiplicity Nb + Nb events. Neither effect is seen in a knockon cascade calculation. A simulation with an event-generating statistical model has been done in order to extract the magnitudes of the effects.
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