Nuclear tracks in CR-39 produced by carbon, oxygen, aluminium and titanium ions

This work describes the response of CR-39 (allyl diglycol polycarbonate) to different ions (C, 0, At and Ti) produced by the Instituto de Fisica 3 MV 9SDH-2 Pelletron accelerator and backscattered front a thin An film on a C support. The ion energies were chosen in series such that the ranges of the different ions in the detector were 2, 3, 4, 5, 6, 7 and 8 mum respectively for each series. Once exposed, the detectors were etched with a solution of 6.25 M KOH at 60degreesC, and the reading was carried Out using a digital image analysis system. An analysis of the measured track diameters of all the types of ions indicates that, for a given range, track kinetics are independent of type of ion, energy and stopping power.