Reaction Mo + Mo between 12 and 18.8 MeV/u: Approaching the Limits of the Deep-Inelastic Process

The triply differential cross sections $\frac{d^3\sigma }{\mathrm{dA}\mathrm{dE}d\theta }$ of binary exit channels in the reactions ${}_{}{}^{92}{}_{}{}^{}\mathrm{Mo}$ + ${}_{}{}^{92}{}_{}{}^{}\mathrm{Mo}$ and ${}_{}{}^{100}{}_{}{}^{}\mathrm{Mo}$ + ${}_{}{}^{100}{}_{}{}^{}\mathrm{Mo}$ 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.