Ion-induced modification of glassy carbon structure and morphology

It has been found that high fluence ion irradiation can result in changes of pristine structure of glassy carbon to amorphous structure at relatively low temperatures (T ⩽ 100 oC) and to ordering till polycrystalline graphite structure at elevated temperatures (T ⩾ 250 oC) The amorphization at room temperature is started at the mean radiation damage level <ν> ∼ 50 dpa and finished at <ν> ≈ 75 dpa. The graphitization at T > 250 °C begins at <ν> ≈ 75 dpa.