Reaction Mo + Mo between 12 and 18.8 MeV/u: Approaching the limits of the deep-inelastic process

The triply differential cross sections d/sup 3/sigma/dA dE dtheta of binary exit channels in the reactions /sup 92/Mo+ /sup 92/Mo and /sup 100/Mo+ /sup 100/Mo have been measured at energies between 12 and 18.8 MeV/u. Complete relaxation is reached at energy losses up to 650 MeV, corresponding to temperatures in the fragments of up to 5 MeV; the primary mass distributions tend to spread over the full range of mass asymmetries, indicating a loss of the initial target and projectile identity and hence the disappearance of an essential feature of the deep-inelastic process.