Effects of vibrationally excited N2 molecules on dielectric breakdown properties of SF6-N2 mixtures
This paper aims at studying the effects of the vibrationally excited N2 molecules on the dielectric breakdown properties of the SF6-N2 mixtures. The population of the vibrationally excited N2 molecules is determined from the Boltzmann distribution. For the cold SF6-N2 mixtures, the critical reduced...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC
2018-10-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/1.5049841 |
| Summary: | This paper aims at studying the effects of the vibrationally excited N2 molecules on the dielectric breakdown properties of the SF6-N2 mixtures. The population of the vibrationally excited N2 molecules is determined from the Boltzmann distribution. For the cold SF6-N2 mixtures, the critical reduced electric field strength (E/N)cr decreases with the increasing vibrational temperature. For the hot SF6-N2 mixtures, the equilibrium compositions are calculated by the minimizing the Gibbs free energy before determining the vibrational distribution function by assuming the vibrational temperature equals to the gas temperature. The calculation results show that when the influence of the vibrationally excited N2 molecules is considered, the critical reduced electric field (E/N)cr of the SF6-N2 mixtures is reduced, and the deviation may be enhanced with a further increase in gas pressure and N2 concentration. |
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| ISSN: | 2158-3226 |