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Abstract
Thin polyimide foils were irradiated with 20 and 30 MeV C 60+ ions and then examined by FTIR. First changes in the FTIR spectra were observed at fluences as low as some 109 cm–2. The findings point at the onset of formation of new radiochemical reaction products for low fluences, and at polyimide destruction at higher fluences. It appears possible to scale different results on Cn + (n = 1 to 60) single-atomic, cluster and fullerene ion irradiation with the total transferred energy density pt = StΦt, where Φt is the cluster ion fluence and St is the total cluster stopping power in the polymer.