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The Disappearance of Flow

S. Soff·S. A. Bass·C. Hartnack·H. Stoecker·W. Greiner
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Abstract

We investigate the disappearance of collective flow in the reaction plane in heavy-ion collisions within a microscopic model (QMD). A systematic study of the impact parameter dependence is performed for the system Ca+Ca. The balance energy strongly increases with impact parameter. Momentum dependent interactions reduce the balance energies for intermediate impact parameters $b\approx4.5$ fm. Dynamical negative flow is not visible in the laboratory frame but does exist in the contact frame for the heavy system Au+Au. For semi-peripheral collisions of Ca+Ca with $b\approx6.5$ fm a new two-component flow is discussed. Azimuthal distributions exhibit strong collectiv flow signals, even at the balance energy.

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S. Soff, S. A. Bass, C. Hartnack, H. Stoecker, W. Greiner. 1995-02-03. The Disappearance of Flow. https://doi.org/10.1103/physrevc.51.3320

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