  The energy losses at collisions of heavy multiply charged ions with light
atoms and polarization losses at moving through the matter have been considered
under circumstances the ion charge Z>>1 and the relative colliding velocity
v>>1, so that Z~v=<c, where c - the light velocity (atomic units are used). In
this region of parameters the Born approximation are not justificative. The
simple formulas for effective stopping are obtained, the comparison with other
theoretical results and experiments are given.

High Energy Physics - Phenomenology