Stopping force of 0.5-3.5Â MeV/u Cl ions in polymers

The stopping force of Cl ions in LR-115 and Kapton polymers, at energies 0.5-3.5 MeV/u, has been measured. These measurements have been performed using 15UD Pelletron accelerator facility at Inter University Accelerator Centre, New Delhi, India. The measured stopping force values have been compared with the corresponding computed values based on the semi-empirical formulations viz. Ziegler et al., Paul and Schinner, Hubert et al., Diwan et al., and standard data tables viz. Northcliffe and Schilling, ICRU-73 report. The aim of the present study is to measure stopping force around Bragg's peak and to check the compatibility of the widely used semi-empirical formulations and standard data tables through comparison with the experimentally measured values.