Dependence of specific energy loss on foil thickness

Abstract

We report on extensive measurements to determine the target thickness dependence of heavy ion energy loss, ( dE dχ ), for the Ne → C system. For ions transmitted with zero net deflection at velocities 0.75 ≤ υ υ 0 ≤ 1.05 , a significant dependence of dE dχ on foil thickness has been observed which, parametrized through the Meyer-Klein-Wedell theory, identifies an inelastic component in the energy loss for scattered particles. A discussion is given of some of the precautions that have proved necessary in applying time-of-flight techniques to these energy loss measurements.