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arXiv · nucl-ex/0207015

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·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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Abstract

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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J. Lukasik, S. Hudan, F. Lavaud, K. Turzo, G. Auger, Ch. O. Bacri, M. L. Begemann-Blaich, N. Bellaize, 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. 2002-07-24. Transverse Velocity Scaling in Au+Au Fragmentation. https://doi.org/10.1103/physrevc.66.064606

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