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Phys. Rev. C 53, R1469–R1472 (1996)

Impact parameter dependence of the disappearance of transverse flow in nuclear collisions

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R. Pak1, W. J. Llope2, D. Craig1, E. E. Gualtieri1, S. A. Hannuschke1, R. A. Lacey3, J. Lauret3, A. C. Mignerey4, D. E. Russ4, N. T. B. Stone1, 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
2T. W. Bonner Nuclear Laboratory, Rice University, Houston, Texas 77251-1892
3Department of Chemistry, State University of New York at Stony Brook, Stony Brook, New York 11794-3400
4Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742-2021

Received 5 June 1995; published in the issue dated April 1996

The impact parameter dependence of the disappearance of directed transverse flow has been investigated for 40Ar+45Sc reactions using the Michigan State University 4π Array upgraded with the High Rate Array (HRA). The energy at which collective transverse flow in the reaction plane disappears, the balance energy (Ebal), is found to increase approximately linearly as a function of impact parameter. Comparison of our measured values of Ebal(b) shows agreement with predictions of Quantum Molecular Dynamics (QMD) model calculations.

© 1996 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevC.53.R1469
DOI:
10.1103/PhysRevC.53.R1469
PACS:
25.70.Pq
 
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