Rise and Fall of Multifragment Emission

Authors: C.A. Ogilvie, J.C. Adloff, M. Begemann-Blaich, P. Bouissou, J. Hubele, G. Imme, I. Iori, P. Kreutz, G.J. Kunde, S. Leray, V. Lindenstruth, Z. Liu, U. Lynen, R.J. Meijer, U. Milkau, W.F.J. Müller, C. Ngo, J. Pochodzalla, G. Raciti, G. Rudolf, H. Sann, A. Schüttauf, W. Seidel, L. Stuttge, W. Trautmann, and A. Tucholski
Published: Phys. Rev. Lett. 67(1991)1214 [->Spires]
Preprint GSI-91-18, March 1991
Abstract: We have studied multifragment decays of Au projectiles after collisions with C, Al, and Cu targets at a bombarding energy of 600 MeV nucleon. We find that with increasing violence of the collision, measured via the multiplicity of light particles, the mean multiplicity of intermediate-mass fragments originating from the projectile first increases to a maximum <MIMF>~=3 and then decreases again. Calculations using the Boltzmann-Uehling-Uhlenbeck model suggest that the fragmentation is governed by the energy Edep deposited into the projectile spectator and that <MIMF> reaches its maximum around Edep~=8 MeV/nucleon.

PACS numbers: 25.70.Np


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