  Isotope production cross sections from 112Sn + 112Sn and 124Sn + 124Sn
reactions at 1 GeV/nucleon, which were measured recently at GSI using the
heavy-ion accelerator SIS18 and the Fragment Separator (FRS), have been
analyzed with the latest Los Alamos Monte-Carlo transport code MCNP6 using the
LAQGSM03.03 event generator. MCNP6 reproduces reasonably well all the measured
cross sections. Comparison of the MCNP6 results with the measured data and with
calculations by a modification of the Los Alamos version of the Quark-Gluon
String Model allowing for multifragmentation processes in the framework of the
Statistical Multifragmentation Model (SMM) by Botvina and coauthors, as
realized in the code LAQGSM03.S1, does not suggest unambiguous evidence of a
multifragmentation signature.
