  We solve the hydrodynamic-ballistic equations of motion for a one-dimensional
time-dependent Thomas-Fermi model of Cl_2 exposed to an intense subpicosecond
laser field, and observe simultaneous multielectron ionization and molecular
dissociation. The fragment kinetic energy defect with respect to the simple
Coulomb explosion picture is found to originate in ejected-electron screening
of the escaping fragments; its magnitude agrees with that observed in recent
experiments.
