Abstract
THE sparking potential of heavy hydrogen between parallel electrodes was recently measured in this laboratory, and the influence of the material of the cathode was also examined. In accordance with the general theory of the discharge, the effect of a change of cathode material was most pronounced at the minimum sparking potential, which was found to be characteristic of the metal of the cathode after it had been de-gassed. Further, for any given metal the minimum sparking potential was found to be very sensitive to the state of the cathode surface even after it had been de-gassed in a vacuum furnace, as exposure of the cathode to the gas for any length of time had a marked effect in lowering the sparking potential.
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References
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JONES, F. Sparking Potential of Deuterium (Heavy Hydrogen). Nature 143, 854 (1939). https://doi.org/10.1038/143854a0
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DOI: https://doi.org/10.1038/143854a0
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