Pion interferometry with ultrarelativistic heavy-ion collisions from the NA35 experiment

  • T. J. Humanic
  • NA35 Collaboration
Conference paper


Results from a pion interferometric analysis of the system 200 GeV/nucleon 16O + Au, central collisions, are reported. Both a Gaussian source model and a model based on the inside-outside cascade are used to fit to the experimental correlation function, giving transverse and longitudinal shape parameters, a freezeout time parameter, and a chaoticity parameter for the pion emitting source. We find a transverse source size consistent with the projectile radius except for a narrow rapidity window centered about the CM rapidity, where significantly larger transverse and longitudinal sizes and a longer freezeout time are measured suggesting a thermalized source. Calculation of freezeout energy densities and correlation lengths, a fit to a single–event correlation function, and comparisons with other pion interferometry experiments are presented.


Correlation Function Quark Matter Rapidity Inter Rapidity Interval Pion Pair 
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Copyright information

© Springer-Verlag Berlin Heidelberg 1988

Authors and Affiliations

  • T. J. Humanic
    • 1
  • NA35 Collaboration
  1. 1.GSIDarmstadtFederal Republic of Germany

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