The damage kinetics induced by irradiation with a diversity of swift ions (O at 5MeV; F at 5.1MeV; Si at 5, 7.5, and 41MeV; and Cl at 11 and 46MeV) has been investigated in the range of 10121015at.cm2. It covers from the initial stage where single damage tracks are isolated and well separated, up to the stage where a full amorphous layer is produced. The damage is characterized by the areal fraction of disorder derived from the Rutherford backscattering∕channeling spectra. The data approximately fit an abrupt Avrami-type dependence with fluence. The fluence value at which 50% of the sample surface becomes disordered shows a clear increasing trend with the electronic stopping power of the ion. The trend is consistent with Monte Carlo simulations based on a recent model for defect creation. Moreover, the quantitative agreement for the defect generation rate appears also reasonable.

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