  Carbon stopping-power (SP) data for heavy ions (HIs), obtained around Bohr
velocities, revealed remarkably lower values than those predicted by the
SRIM/TRIM calculations/simulations. An attempt was made to extract the elastic
(collisional) and inelastic (electronic) components from available SP data. A
problem is that essentially total SP is measured in experiments, whereas
electronic SP values, presented as the results, are obtained by the subtraction
of the calculated collisional component values from the measured ones. At high
HI reduced velocities (V/v0)/Z_HI^2/3 > 0.3 (V and v0 are HI and Bohr
velocities, respectively, and Z_HI is the HI atomic number), the collisional
component can be neglected, whereas at Bohr velocities it becomes comparable to
the electronic one. These circumstances were used to compare the experimental
data with SRIM/TRIM calculations/simulations and to extract empirically the
collisional SP component.
