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Phys. Rev. Lett. 78, 2084 - 2087 (1997)

Evidence for the Decay of Nuclear Matter Toroidal Geometries in Nucleus-Nucleus Collisions

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N. T. B. Stone1, O. Bjarki1, E. E. Gualtieri1, S. A. Hannuschke1, R. Lacey2, J. Lauret2, W. J. Llope3, D. J. Magestro1, R. Pak1, A. M. Vander Molen1, G. D. Westfall1, and J. Yee1
1National Superconducting Cyclotron Laboratory and Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824-1321
2Department of Chemistry, State University of New York at Stony Brook, Stony Brook, New York 11794-3400
3T. W. Bonner Nuclear Laboratory, Rice University, Houston, Texas 77251

Received 23 July 1996

Systematic experimental evidence is presented for the decay of nuclear matter from toroidal geometries using reactions of 86Kr+93Nb at incident energies ranging from 35 to 95 MeV/nucleon. The decay of noncompact geometries is established through two charge-related observables, and the distinction between toroidal and bubblelike geometries is achieved through event shape analysis. Indications of these exotic geometries appear for beam energies between 60 and 75 MeV/nucleon.


©1997 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevLett.78.2084
DOI: 10.1103/PhysRevLett.78.2084
PACS: 25.70.Pq, 21.10.Gv

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