Figure 1

Etch pit growth curves of carbon and/or oxygen ions in (a) CR-39, (b) PC, and (c) PET. The inserted microscope images in (a)–(c) show etch pits of the 26 MeV oxygen ion registered on the front surface of each SSNTD at each etching time. The error bars represent the standard deviations of the etch pit radius. Some error bars are behind the markers.