A critique of methods for calculating the dielectric strength of gas mixtures
- Resource Type
- Authors
- P. J. Chantry; R. E. Wootton
- Source
- Journal of Applied Physics. 52:2731-2739
- Subject
- Physics
Field (physics)
Dielectric strength
Mathematical model
Electric field
Ionization coefficient
Range (statistics)
General Physics and Astronomy
Thermodynamics
Monotonic function
Dielectric
- Language
- ISSN
- 1089-7550
0021-8979
Three currently available methods for predicting the dielectric strength of gas mixtures are discussed and compared. All are based on the common principle of linear addition of some property of the individual gases in proportion to their concentration in the mixture. The simplest approach uses a weighted sum of the dielectric strengths of the separate gases. The other approaches are based on predicting the limiting reduced field (E/N)*m at which the net ionization coefficient of the mixture (ᾱ/N)m = 0. Wieland’s approximation for ᾱm involves a weighted sum of the ᾱ’s for the separate gases, and requires a knowledge of these over the range (E/N)*w