  We report on new measurements of breakup temperatures for target spectators
from 197Au + 197Au reactions at 1000 MeV per nucleon. The temperatures rise
with decreasing impact parameter from 4 MeV for peripheral to about 10 MeV for
the most central collisions, in good agreement with previous results for
projectile spectators at 600 MeV per nucleon.
  The measured temperatures agree quantitatively with the breakup temperatures
predicted by the statistical multifragmentation model. For these calculations a
relation between the initial excitation energy and mass was derived which gives
good simultaneous agreement for the fragment charge correlations.
  The energy spectra of light charged particles and the behaviour of the mean
kinetic energies of neutrons indicate a substantial component of light particle
emission prior to the final breakup stage.
