Polymers (CR-39, SR-86 and Makrofol-KG) and glasses (soda lime and barium phosphate) were irradiated using 12 C 5+ ions from the 15UD Pelletron at the NSC, New Delhi. The beam energy was fixed at 60 MeV and the fluence was varied in the range 10 11 -10 14 ions cm −2 . Irradiation effects were studied using UV-visible and IR spectroscopic techniques. For all the polymer targets there was an increase in absorption due to irradiation mainly in the shorter wavelength region. The change in chemical behaviour of bulk samples is studied by the etching technique. Annealing effects are observed in Makrofol-KG after 75 min heating at 120 • C. There is no appreciable change in the optical properties of glasses studied with ion doses in the range 10 11 -10 14 . The morphology of heavy-ion latent tracks in insulators is revealed by atomic force microscopy. The applications of ion-track filters produced by swift heavy ions in thin polymer films are also discussed.

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