Electronic energy loss of ions in solids in the energy range 10-104keV/nucleon

The electron-density distribution in solids differs from that of a free atom. The main difference is in the peripheral region, where the electron density is greater than that of a free atom and is fairly constant. At low ion velocity, below $3-4v_0$, where $v_0=\frac{c}{137}$, this is the region which absorbs most of the transferred energy. A simple model for computation of the electronic energy loss in solids, which takes those facts into account and uses the Lindhard-Winther formalism, is developed, and is compared with other existing models. The agreement between computational and experimental results is better than that of other models, especially around the maximum of the $S_e\mathrm{}\left(v\right)\mathrm{}$ curve and below. Some of the differences between various experimental results can be explained within the framework of this model.