An experimental study of electron loss during the passage of fast hydrogen atoms through atomic hydrogen

Abstract
The process of electron loss in single collisions during the passage of fast hydrogen atoms through hydrogen has been studied in the energy range 40-220 kev. The ratio Q01(H)/Q01(H2) of the electron-loss cross sections in atomic and molecular hydrogen has been determined by using a tungsten tube furnace to provide a target composed of highly dissociated hydrogen. At energies above about 120 kev, cross sections Q01(H) estimated by the use of well-established values of Q01(H2) are found to be in good agreement with theoretical values calculated by Bates and Griffing using Born's approximation.