An empirical formula based on Bohr’s classical approach has been developed to predict the stopping power (force) for ions with energies of 0.1–1.0 MeV/u in elemental targets. This formula represents the available data with a global error of better than 10% and permits reliable prediction of the stopping power for projectile–target combinations where no data is currently available.
Nuclear Instruments & Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms Vol. 215, Issue 1-2, p. 35-47