Peculiarities of tracks formed in polycarbonate films irradiated with Kr+ ions

Radiation chemical transformations of polycarbonate (PC) irradiated with accelerated Kr+ ions have been studied. The irradiation results in the cleavage of carbonate bridges accompanied by the detachment of phenyl groups to form aldehyde and ketone groups. The formation of branched and linked PC macromolecules is established. The products of etching of PC bombarded by heavy ions have been determined. It is established that the oligomers formed differ both by molecular weight distribution and chemical composition, depending on the sizes of the etched track.