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Study of the out-of-plane emission of protons and light fragments in symmetric heavy-ion collisions

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Zeitschrift für Physik A Hadrons and Nuclei

Abstract

Midrapidity protons from209Bi+209Bi collisions were measured with the Kaon Spectrometer at SIS at incident energies of E Lab /A=400, 700 and 1000 MeV. Additionally, light fragments were analysed at 400 MeV. We have investigated the azimuthal emission pattern of the particles relative to the reaction plane as function of transverse momentum, bombarding energy and impact parameter. We observe an enhanced emission of particles perpendicular to the reaction plane at all bombarding energies. The ratio of the number of particles emitted out-of-plane/in-plane increases strongly with the particles transverse momentum. The anisotropy decreases with increasing beam energy. Composite particles show a much stronger effect than protons.

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Author information

Author notes

  1. C. Müntz

    Present address: BNL, 11973, Upton, NY, USA

  2. D. Miśkowiec

    Present address: SUNY, 11794-3800, Stony Brook, NY, USA

Authors and Affiliations

  1. Johann Wolfgang Goethe-Universität, D-60325, Frankfurt/Main, Germany

    D. Brill, P. Beckerle, C. Bormann, E. Schwab, Y. Shin, R. Stock & H. Ströbele

  2. Technische Hochschule Darmstadt, D-64289, Darmstadt, Germany

    P. Baltes, C. Müntz, H. Oeschler, C. Sturm & A. Wagner

  3. Gesellschaft für Schwerionenforschung, D-64220, Darmstadt, Germany

    R. Barth, M. Cieślak, M. Dębowski, E. Grosse, P. Koczoń, M. Mang, D. Miśkowiec, R. Schicker & P. Senger

  4. Philipps-Universität, D-35037, Marburg, Germany

    B. Kohlmeyer, F. Pühlhofer, J. Speer & K. Völkel

  5. Jagiellonian University, PL-30-059, Kraków, Germany

    W. Waluś

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  1. D. Brill
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Additional information

Communicated by V. Metag

This work is supported by the German Federal Minister for Research and Technology (BMFT), by the Gesellschaft für Schwerionenforschung (GSI) and by the Polish Committee of Scientific Research.

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Brill, D., Beckerle, P., Bormann, C. et al. Study of the out-of-plane emission of protons and light fragments in symmetric heavy-ion collisions. Z. Physik A — Hadrons and Nuclei 355, 61–68 (1996). https://doi.org/10.1007/s002180050078

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  • DOI: https://doi.org/10.1007/s002180050078

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