Electronic stopping force of 16O, 19F, 48Ti and 63Cu ions in molybdenum over a continuous energy range of 0.08–0.6 MeV/n

Abstract

In this work, Time-of-Flight spectrometry was used to measure the electronic stopping force of ¹⁶O, ¹⁹F, ⁴⁸Ti and ⁶³Cu partially stripped heavy ions crossing Molybdenum over an energy range of (0.08–0.6) MeV/nucleon with errors less than 5 %. Theoretical predictions from the PASS code, SRIM-2013 simulation, Readjusted Bohr Model (RBM) that Guesmia et al. proposed, and the Convolution approximation for swift Particles (CasP) code including electrons capture, were compared with the measured values. While the RBM model, the PASS and CasP codes describe accurately the electronic stopping force in the region where the nuclear stopping force is negligible for ⁴⁸Ti and ⁶³Cu ions, it turns out to deviate from the experimental data by about 10–25 % in the region where the nuclear stopping force becomes appreciable for the same ions. For ¹⁶O and ¹⁹F where the studied energy range is near the Bragg's peak, the RBM model and the PASS code describe accurately the electronic stopping force. Even though the SRIM simulation accurately describes the ions (⁴⁸Ti, ⁶³Cu and ¹⁶O), it turns out to deviate from the experimental data by about 10–18 % for ¹⁹F.