Multifragment disintegration of the ${}_{}{}^{129}{}_{}{}^{}\mathrm{Xe}$${+}^{197}$Au system at E/A=50 MeV

Multifragment disintegrations following ${}_{}{}^{129}{}_{}{}^{}\mathrm{Xe}$${+}^{197}$Au collisions at E/A=50 MeV have been studied with a multidetector system covering 88% of 4π in solid angle. The average number of intermediate-mass fragments (Z=3–20) increases strongly as a function of charged-particle multiplicity and reaches values larger than six for the most violent collisions. The results are compared to calculations with both dynamical and statistical models.