Formation and Decay of Equilibrated Spectator Nuclei at
Relativistic Bombarding Energies
Formation and Decay of Equilibrated Spectator Nuclei at
Relativistic Bombarding Energies| Authors: | W. Trautmann, M. Begemann-Blaich, Th. Blaich, C. Groß, H. Emling, A. Ferrero, G. Imme, I. Iori, G.J. Kunde, W.D. Kunze, V. Lindenstruth, U. Lynen, T. Möhlenkamp, A. Moroni, W.F.J. Müller, B. Ocker, J. Pochodzalla, G. Raciti, T. Rubehn, H. Sann, A. Schüttauf, C. Schwarz, W. Seidel, V. Serfling, J. Stroth, A. Trzcinski, A. Tucholski, G. Verde, A. Wörner, E. Zude, B. Zwieglinski |
| Published: |
Proceedings of the
33rd International Winter Meeting On
Nuclear Physics, 23-28 Jan 1995, Bormio, Italy
edited by I. Iori and A. Moroni (Ricerca Scientifica ed Educazione Permanente, Milano, 1995), p 372 |
| Abstract: |
In recent experiments with the ALADIN forward-spectrometer
multifragment decays of heavy nuclei were studied for a wide
range of projectiles and targets and for bombarding energies
between 100 and 1000 MeV per nucleon.
The systematics available from these data exhibit a pronounced
universality for the fragmentation of excited spectators after
peripheral collisions of heavy symmetric systems or after more
central collisions of mass asymmetric systems.
In order to permit a statistical interpretation of the spectator decay the masses and the deposited excitation energies prior to the decay were determined from balance equations. The experimental input to these equations included the number and kinetic energies of free neutrons measured with the large-area neutron detector LAND. Results from the analysis for 197Au on 197Au at a bombarding energy of 600 MeV per nucleon will be presented. |
| Paper: |
Postscript
11 pages with 8 embedded figure
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| Figures: |
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