Abstract

In order to make detailed analysis by the Boltzmann equation possible, a set of electron collision cross-sections for CCl2F2, an important material in various fields, is determined for the first time. In spite of the lack of available cross-section data, Boltzmann equation analysis using the set of values determined here gives calculated values which agree well with measurements of the swarm parameters of CCl2F2, indicating the validity of the cross-section set and the method of analysis. In addition, the accuracy of the set of values was checked by test calculations, and the Boltzmann equation method was then applied to CCl2F2+N2 gas mixtures, giving results which explain the flashover properties of the mixtures very well.

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