Abstract
IT is a well-known phenomenon in gas-filled photoelectric cells that, if the cathode is exposed to illumination, a faint glow is visible within the cell at anode potentials well below the striking potential, that is, below the potential at which the self-maintained discharge starts. Owing to the fact that, as a rule, this glow is of low brightness as compared with the light source which is used to cause the photo-electric emission, it is difficult to establish the anode potential at which the glow begins.
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SOMMER, A. Visible Glow Discharge at Very Low Potentials. Nature 156, 242 (1945). https://doi.org/10.1038/156242a0
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DOI: https://doi.org/10.1038/156242a0
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