STOPPING POWER DETERMINATIONS BY THE TRANSMISSION TECHNIQUE

Details of the experimental procedures related to the transmission tec hnique are described. Parameters affecting the stopping power measurem ents by this technique are pointed out and discussed. For example, the importance of an accurate foil areal density determination is emphasi zed, and methods for the determination are introduced. The accuracy an d possible error sources of the stopping power values are reviewed. Ad vantages as well as limitations of the method are discussed. As an exa mple the stopping powers of 600-3200 keV He-4 ions in polyimide (Kapto n) have been determined. The experimental results are compared with th e predictions of widely used semiempirical models.