Surface nanostructure evolution in carbon fiber under ion-induced corrugation

The results of experimental study of the morphology evolution of carbon fiber VMN-4 based on PAN fiber depending on 30 keV Ar+ irradiation with exponential fluence decrease from center to periphery of ion beam spot on the target are presented and discussed. Scanning electron microscopy show a strong influence of ion fluence on the morphology, expressed by the transformation of nanoscale conical elements in a submicron corrugated structure.