Abstract
In the present study, CR-39 and Lexan polycarbonate plastic track detectors have been exposed to various heavy ion beams, i.e. 238U, 208Pb, 197Au, 139La, 132Xe and 93Nb (energy range from 5.6 to 18.0 MeV/u), from the UNILAC accelerator at GSI, Darmstadt. After exposure, the irradiated samples were etched under optimum etching conditions. The total etchable ranges of these heavy ions have been determined experimentally using a Carl Zeiss binocular microscope. In order to check the validity of the various stopping power and range formulations in this energy range, the experimentally determined range values have been compared with theoretically computed values from the Benton and Henke [Nucl. Instr. and Meth. 67 (1969) 87], Mukherjee and Nayak [Nucl. Instr. and Meth. 159 (1979) 421], Ziegler et al. [Stopping power and range of ions in solids, vol. 1 (Pergamon, New York, 1985); Nucl. Instr. and Meth. B 35 (1988) 215] and Hubert et al. [Nucl. Instr. and Meth. B 36 (1989) 357] formulations.
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