Electron Loss Process in the Hydrogen Afterglow

Electron loss processes in the afterglow of very pure hydrogen have been studied by the microwave technique. The conclusion is drawn that within the error of the experiment, no electron-ion recombination is observed, and that high-mode diffusion is very evident. By properly accounting for the high diffusion modes, the results are given as Dₐp=700±50 cm²-mm Hg sec^-1 with the electron-ion recombination less than 3×{}10^-8 cm^-3 sec^-1.