Zündspannung und normaler Katodenfall der Glimmentladung für Edelgase und reine Molybdänkatoden

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Abstract
Breakdown voltage near PASCHEN‐minimum and normal cathode fall of the glow discharge were calculated for inert gases and molybdenum cathodes on the basis of a simple theory. The method used was similar to TAKEISHI's one. The calculated breakdown voltages are in good agreement with measured values, if back scattering of the yi ‐electrons and the distance which electrons travel from the cathode without ionization is taken into account. In the case of the normal cathode fall the values calculated with the same assumptions for inert gases and molybdenum cathodes are much higher (up to 50%) than the well known experimental values. It was concluded, that the yi‐process in the glow discharge ist not the only important one. Comparing the calculated and experimental values of the normal cathode fall we obtain the result, that photons and/or ions from the glow release about 40–60% of all electrons at the cathode.