Interaction of H− ions with foil targets in the charge exchange system of a beam transport channel

Abstract

The possibility of experimentally modeling the interaction of high energy H− ions with foil targets using beams with more accessible lower energies that have the same dimensionless interaction parameter and similar current characteristics is pointed out. Results are presented from the first stage of a study of the beam-foil stripping of 2 and 7 MeV H− ions. An analysis of the charge composition of the beam after a carbon foil serves as a basis for determining the corresponding cross sections for stripping of the ions and ionization of the product hydrogen atoms. The data from these and other beam-foil experiments are in good agreement with theoretical cross sections on carbon at different energies, as well with calculated values based on the superposition of experimental cross sections for gaseous carbon-containing targets.