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High-order azimuthal correlation functions: powerful probes for collective motion in heavy ion reactions

  • J. Lauret
  • , Roy A. Lacey
  • , A. Elmaani
  • , A. Tsepetis
  • , A. Moores
  • , G. D. Westfall
  • , D. Craig
  • , E. Gualtieri
  • , S. Hannuschke
  • , T. Li
  • , W. J. Llope
  • , R. Pak
  • , N. Stone
  • , A. Vander Molen
  • , J. Yee
  • , A. Nadasen
  • , R. S. Tickle
  • , E. Norbeck
  • Stony Brook University
  • National Science Foundation
  • University of Michigan, Dearborn
  • University of Michigan, Ann Arbor
  • University of Iowa

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

We have investigated the utility of high-order azimuthal correlation functions as probes of collective motion from both rotation and flow at intermediate energies. Reaction simulations indicate new and distinct signatures for rotational collective motion which are important for its characterization and its distinction from collective flow. For the system Ar + Sc(35-115A MeV), experimental high-order correlation functions are used for a clear demonstration of the disappearance of collective flow at 93±4A MeV. The method is direct and circumvents reaction-plane assignment.

Original languageEnglish
Pages (from-to)22-27
Number of pages6
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume339
Issue number1-2
DOIs
StatePublished - Nov 10 1994

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