Systematics of azimuthal asymmetries in heavy ion collisions in the 1AGeV regime

W. Reisdorf, Y. Leifels, A. Andronic, R. Averbeck, V. Barret, Z. Basrak, N. Bastid, M. L. Benabderrahmane, R. Čaplar, P. Crochet, P. Dupieux, M. Dželalija, Z. Fodor, P. Gasik, Y. Grishkin, O. N. Hartmann, N. Herrmann, K. D. Hildenbrand, B. Hong, T. I. KangJ. Kecskemeti, Y. J. Kim, M. Kirejczyk, M. Kiš, P. Koczoń, M. Korolija, R. Kotte, T. Kress, A. Lebedev, X. Lopez, T. Matulewicz, M. Merschmeyer, W. Neubert, M. Petrovici, K. Piasecki, F. Rami, M. S. Ryu, A. Schüttauf, Z. Seres, B. Sikora, K. S. Sim, V. Simion, K. Siwek-Wilczyńska, V. Smolyankin, M. Stockmeier, G. Stoicea, Z. Tymiński, K. Wiśniewski, D. Wohlfarth, Z. G. Xiao, H. S. Xu, I. Yushmanov, A. Zhilin

Research output: Contribution to journalArticlepeer-review

133 Citations (Scopus)


Using the large acceptance apparatus FOPI, we study central and semi-central collisions in the reactions (energies in AGeV are given in parentheses): 40Ca+ 40Ca (0.4, 0.6, 0.8, 1.0, 1.5, 1.93), 58Ni+ 58Ni (0.15, 0.25, 0.4), 96Ru+ 96Ru (0.4, 1.0, 1.5), 96Zr+ 96Zr (0.4, 1.0, 1.5), 129Xe+CsI (0.15, 0.25, 0.4), 197Au+ 197Au (0.09, 0.12, 0.15, 0.25, 0.4, 0.6, 0.8, 1.0, 1.2, 1.5). The observables include directed and elliptic flow. The data are compared to earlier data where possible and to transport model simulations. A stiff nuclear equation of state is found to be incompatible with the data. Evidence for extra-repulsion of neutrons in compressed asymmetric matter is found.

Original languageEnglish
Pages (from-to)1-60
Number of pages60
JournalNuclear Physics A
Publication statusPublished - 2012 Feb 15

Bibliographical note

Funding Information:
This work has been supported by the German BMBF, contract 06HD154, by the DFG (Project 446-KOR-113/76) and DFG (Project 436POL 113/121/0-1), by the Polish Ministry of Science and Higher Education under Grant No. DFG/34/2007/, the DAAD (PPP D/03/44611) and the IN2P3/GSI agreement 97/29. This work was also supported by the National Research Foundation of Korea (NRF) under Grant (No. 2011-0003258).


  • Directed flow
  • Elliptic flow
  • Heavy ions
  • Isospin
  • Nuclear equation of state

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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