Nuclear Multifragmentation And The Onset
of Radial Flow: A Study of Au + Au Collisions Between
40 and 100 MeV/A
Nuclear Multifragmentation And The Onset
of Radial Flow: A Study of Au + Au Collisions Between
40 and 100 MeV/A| Authors: | F. Lavaud, E. Plagnol for the INDRA-ALADIN collaboration |
| Published: |
Proceedings of the
International Nuclear Physics Conference (INPC 2001):
Nuclear Physics And The 21st Century
30 Jul - 3 Aug 2001, Berkeley, California
Edited by Eric Norman et al., AIP Conference Proceedings, Vol. 610 (New York, 2002) |
| Abstract: | The influence of radial flow on nuclear multifragmentation is studied using Au+Au central collisions for incident energies between 40 and 100 MeV/A. Central collisions are selected via an impact parameter estimator defined by the transverse energy of light charged particles. At all energies, the fragment size distributions are studied using the Statistical Multifragmentation Model (SMM) in order to extract thermal excitation energies. The excess kinetic energies are analyzed via the hypothesis of a radial, selfsimilar, but nonisotropic flow. At the lowest energy, this flow is small with respect to the thermal energy whereas, at 100 MeV/A thermal and radial energies are of the same order. The nature and origin of the radial flow is discussed. A comparison with the predictions of the Quantum Molecular Dynamics code is presented. |
| Paper: |
Postscript (307 kb)
PDF (153 kb)
5 pages with 6 embedded figures
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