  We have studied the fragment yields emitted from the fragmentation of excited
projectile nuclei in peripheral collisions of 136Xe+Pb at 1 GeV/nucleon, and
measured with the high-resolution magnetic spectrometer, the Fragment Separator
(FRS) of GSI. The mass, charge and isotope distributions of nuclear fragments
formed in the reactions were calculated within a statistical ensemble approach
and compared to the experimental data. The ensemble of excited projectilelike
source nuclei were created in the framework of a previous analysis of similar
reactions performed at 600 MeV/nucleon (ALADIN-experiments, GSI). In addition,
the ensemble of the low-excited compound nuclei is involved in the analysis.
The overall agreement between theory and experiment was very satisfactory in
reproducing the experimental data of isotope yields measured in the heavy-ion
collisions. It is confirmed that a broad range of elements can be reproduced
within a universal statistical disintegration of the excited projectile
residues.
