Low-speed limit of Bohr's stopping-power formula.

Bohr{close_quote}s classical (nonrelativistic) model of charged-particle stopping is evaluated explicitly for arbitrary values of projectile charge and speed. This removes the logarithmic cutoff from the original expression and generates a stopping formula which can be utilized also to extend the range of practical applicability of Bloch{close_quote}s theory. As expected such a formulation appears to be a better starting point than the Born approximation for estimating stopping powers of heavy ions at velocities {ital v}{lt}{ital Z}{sub 1}{ital e}{sup 2}/{h_bar}. {copyright} {ital 1996 The American Physical Society.}