Fragmentation cross sections of relativistic
M. de Jong, K.-H. Schmidt, B. Blank, C. Böckstiegel, T. Brohm,
H.-G. Clerc, S. Czajkowski, M. Dornik, H. Geissel, A. Grewe, E. Hanelt, A. Heinz, H.
Irnich, A. R. Junghans, A. Magel, G. Münzenberg, F. Nickel, M. Pfützner, A. Piechaczek,
C. Scheidenberger, W. Schwab, S. Steinhäuser, K. Sümmerer, W. Trinder, B. Voss, C.
Technische Hochschule Darmstadt, Institut für Kernphysik, Schloßgartenstraße 9, 64289
Gesellschaft für Schwerionenforschung, Planckstraße 1, 64291 Darmstadt, Germany
University of Warsaw, Warsaw, Poland
C. E. N. Bordeaux-Gradignan, 33175 Gradignan, France
Abstract: Production cross sections of more than 270 isotopes ranging from Z = 59 to Z
= 82 were measured in the reaction 208Pb (1 GeV A) + Cu. The method of identifying the
projectile fragments and evaluating the production cross sections is described. The
experimental data are compared with a modern version of the abrasion-ablation model and
with the empirical parametrization EPAX. Apart from deviations in the details they both
show an overall good agreement. The cross sections of those fragments which are produced
by the removal of protons only test the lower part of the excitation-energy distribution.
For the first time, the four-proton removal channel could be observed.
Keywords: NUCLEAR REACTIONS Cu(208Pb,X), E = 208 GeV; measured isotopical yields,
s for isotopes from Z = 59 to Z = 82; deduced 4-proton removal
channel evidence. Isotopical separation. Abrasion-ablation model, empirical
Table of the production cross sections: Experimental production
cross sections from the fragmentation of 208Pb in copper at 1 A GeV, also available as SATAN analyzers.