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DISTRIBUTION OF Ir AND Pt ISOTOPES
PRODUCED AS FRAGMENTS OF 1 A GeV 197Au PROJECTILES - A THERMOMETER FOR PERIPHERAL NUCLEAR
COLLISIONS
K.-H. Schmidt, T. Brohm, H.-G. Clerc, M. Dornik, M. Fauerbach, H. Geissel, A. Grewe, E.
Hanelt, A. Junghans, A. Magel, W. Morawek, G. Muenzenberg, F. Nickel, M.
Pfuetzner, C.
Scheidenberger, K. Suemmerer, D. Vieira, B. Voss, C. Ziegler
Gesellschaft für Schwerionenforschung, W-6100 Darmstadt, FRG
Institut für Kernphysik, TH Darmstadt, W-6100 Darmstadt, FRS
Universität Gießen, W-6300 Gießen, FRG
Abstract: Cross sections of iridium and platinum isotopes have been
measured, which were produced as fragments from 197Au projectiles, interacting with
aluminium target nuclei at 1 A GeV. The fragments were identified by a kinematic analysis
(Delta-E - B-rho - time-of-flight) and by an ion-optical separation at the
projectile-fragment separator FRS at GSI. Indications are found for high excitation
energies and weak proton-neutron correlations in the peripheral nuclear-collision process.
Published in: Phys. Lett. B 300 (1993) 313-316
