ボルツマン方程式による3成分混合ガス(N_2/SF_6/c-C_4F_8)の電子スウォームパラメータ解析

概要

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Electron swarm parameters in ternary gas mixtures comprised of N_2,SF_6,and c-C_4F_8 are analyzed by a Boltzmann equation to investigate the discharge mechanism of the mixture gases. It is shown that the improvement in the breakdown strength of the gas mixtures results from the fact that more electrons attach to SF_6 than c-C_4F_8 at low mixture ratios of c-C_4F_8. It is emphasized that the electron attachment properties of the ternary gas mixtures are greatly depending on the behavior of SF_6 and c-C_4F_8 in those gases from the analytical results of the electron swarm parameters for each binary gas mixture combination such as N_2/SF_6,N_2/c-C_4F_8,and SF_6/c-C_4F_8. Furthermore, the authors confirm the synergism in the ternary gas mixtures, from the results of calculation using the Boltzmann equation which represent the changes of limiting field strength, as same as seen in the experimental limiting field strength.
東海大学の論文