Electron Removal in Argon Afterglows

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Abstract
Ambipolar diffusion and recombination occurring in argon after the cut-off of a pulsed microwave discharge have been studied. The electron density and spectroscopic data obtained indicated that ambipolar diffusion is operative at low pressures, supplemented by recombination which is characterized by a relatively low recombination coefficient. At high pressures, electron removal is principally by recombination which is characterized by a relatively high value of recombination coefficient.