Phys. Rev. Lett. 77, 3514–3517 (1996)

Dynamical Fragment Production as a Mode of Energy Dissipation in Heavy-Ion Reactions

Abstract

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J. Tõke, D. K. Agnihotri, S. P. Baldwin, B. Djerroud, B. Lott, B. M. Quednau, W. Skulski, and W. U. Schröder
Department of Chemistry and Nuclear Structure Research Laboratory, University of Rochester, Rochester, New York 14627

L. G. Sobotka, R. J. Charity, and D. G. Sarantites
Department of Chemistry, Washington University, St. Louis, Missouri 63130

R. T. de Souza
Department of Chemistry and Indiana University Cyclotron Facility, Indiana University, Bloomington, Indiana 47405

Received 15 March 1996; published in the issue dated 21 October 1996

Based on measured correlations between experimental observables in the ²⁰⁹Bi+¹³⁶Xe reaction at E/A = 28 MeV, it is shown that multiple intermediate-mass fragment (IMF) production is a dynamical process driven by the energy of relative motion of projectilelike and targetlike fragments. This kinetic energy is converted into thermal energy of the system, until a certain “saturation” value of approximately 3 MeV/nucleon is reached. From this point on, this “conventional” dissipation mechanism is replaced by dynamical IMF production, constituting a new mode of energy dissipation.

URL:

http://link.aps.org/doi/10.1103/PhysRevLett.77.3514

DOI:

10.1103/PhysRevLett.77.3514

PACS:

25.70.Lm, 25.70.Mn, 25.70.Pq

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Phys. Rev. Lett. 77, 3514–3517 (1996)

Dynamical Fragment Production as a Mode of Energy Dissipation in Heavy-Ion Reactions

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