  Complex structural effects in the nuclide production from the projectile
fragmentation of 1 A GeV 238U nuclei in a titanium target are reported. The
structure seems to be insensitive to the excitation energy induced in the
reaction. This is in contrast to the prominent structural features found in
nuclear fission and in transfer reactions, which gradually disappear with
increasing excitation energy. Using the statistical model of nuclear reactions,
relations to structural effects in nuclear binding and in the nuclear level
density are demonstrated.
