  The disassembly of molecular clusters $(N_2)_n$ ($n$=50-3000) in strong
optical fields is investigated using two-dimensional time-of-flight
spectrometry. Very highly charged ions are formed with a two-component energy
distribution. A low-energy, isotropic component correlates with Coulomb
explosion. A high-energy, anisotropic component, that results from a ``charge
flipping" acceleration mechanism, gives rise to ions with energies in excess of
the Coulombic limit.
