Contents
Following an examination of the definition of the effective coefficient of ionisation\(\bar \alpha\), a reformulation of the streamer breakdown criterion is undertaken. The application of this criterion to strongly electronegative gases and gas mixtures is considered, and a figure of merit is introduced to describe dielectric behaviour. By considering both ideal and practical electrode systems, this parameter is shown to be of fundamental importance with respect to the evaluation of the breakdown characteristics of such gases. Its value can be determined from a precision measurement of the linear portion of the Paschen curve.
Übersicht
Nach einer Diskussion der Definition des effektiven Ionisationskoeffizienten\(\bar \alpha\) wird eine Neufassung des Streamer-Durchschlagskriteriums aufgestellt. Die Anwendung dieses Kriteriums auf stark elektronegative Gase und Gasmischungen wird besprochen, und ein das dielektrische Verhalten beschreibender Qualitätsparameter wird eingeführt. Es wird gezeigt, daß dieser Parameter für die Berechnung von Durchschlagskennlinien solcher Gase von entscheidender Wichtigkeit ist; dabei betrachtet man sowohl idealisierte als auch praktische Elektrodensysteme. Den Wert des Parameters erhält man durch Präzisionsmessung des linearen Teils der Paschenkurve.
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Pedersen, A., McAllister, I.W., Crichton, G.C. et al. Formulation of the streamer breakdown criterion and its application to strongly electronegative gases and gas mixtures. Archiv f. Elektrotechnik 67, 395–402 (1984). https://doi.org/10.1007/BF01614884
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DOI: https://doi.org/10.1007/BF01614884