title: Stopping powers of a tissue-equivalent gas for 40-200 ke V He+ and N+.
abstract: The stopping powers of a tissue-equivalent gas have been measured for He+ and N+ using the ion beams from a Cockcroft and Walton type accelerator and a differentially pumped gas cell. The stopping powers of each component of the tissue-equivalent gas were also measured and used to calculate expected values of the stopping powers of the tissue-equivalent gas. Results from direct measurement and from calculation showed good agreement.
mesh_terms: D005740:Gases; D006371:Helium; D007477:Ions; D009584:Nitrogen
chemical_list: D005740:Gases; D007477:Ions; D006371:Helium; D009584:Nitrogen