The breakdown of argon at low pressure

Abstract
Measurements of prebreakdown currents and breakdown voltages at low values of ND to the left of the Paschen minimum are given for argon. Analysis of the results shows that the model of breakdown previously applied to mercury vapour may also be used for argon. Values of M and γ are given at E/N values down to 28 × 10−18 V m2, where M is the total electron multiplication coefficient and γ is the usual secondary coefficient. Theoretical values of M are shown to be in good agreement with measured values.

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