arxiv: nucl-ex/0207015 · v1 · submitted 2002-07-24 · ⚛️ nucl-ex

Transverse Velocity Scaling in Au+Au Fragmentation

J. Lukasik , S. Hudan , F. Lavaud , K. Turzo , G. Auger , Ch.O. Bacri , M.L. Begemann-Blaich , N. Bellaize

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R. Bittiger F. Bocage B. Borderie P. Buchet R. Bougault B. Bouriquet J.L. Charvet A. Chbihi R. Dayras D. Durand D. Dore J.D. Frankland E. Galichet D. Gourio D. Guinet B. Hurst C. Leduc P. Lautesse J.L. Laville A. Le Fevre R. Legrain U. Lynen W.F.J. Mueller O. Lopez L. Nalpas H. Orth E. Plagnol E. Rosato A. Saija G. Tabacaru C. Sfienti C. Schwarz J.C. Steckmeyer B. Tamain W. Trautmann E. Vient A. Trzcinski M. Vigilante C. Volant B. Zwieglinski A.S. Botvina

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keywords collisionsincidentperipheralscalingatomiccasescentralcharacterize

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Invariant transverse-velocity spectra of intermediate-mass fragments were measured with the 4-pi multi-detector system INDRA for collisions of Au on Au at incident energies between 40 and 150 MeV per nucleon. Their scaling properties as a function of incident energy and atomic number Z are used to distinguish and characterize the emissions in (i) peripheral collisions at the projectile and target rapidities, and in (ii) central and (iii) peripheral collisions near mid-rapidity. The importance of dynamical effects is evident in all three cases and their origin is discussed.

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Transverse Velocity Scaling in Au+Au Fragmentation

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