  With INDRA at GSI, multifragmentation was studied in 197Au + 197Au reactions
at bombarding energies 40 to 150 MeV per nucleon. The mechanisms of fragment
production at mid-rapidity in peripheral collisions and the interplay of
collective motion and fragmentation in central collisions were investigated.
The balance energy for squeeze-out, i.e. the transition energy from in-plane to
out-of-plane enhancement of the particle and fragment emissions is determined
as a function of the impact parameter.
