Optical analysis of the interface between a moving arc and air at atmospheric pressure

Autor:	H. H. Mai, B. Jean, K. Dimoff
Rok vydání:	1979
Předmět:	Atmospheric pressure business.industry Chemistry Front (oceanography) General Physics and Astronomy Thermal conduction Arc (geometry) Core (optical fiber) Interferometry Optics sense organs Atmospheric electricity business Refractive index
Zdroj:	Journal of Applied Physics. 50:3944-3955
ISSN:	1089-7550 0021-8979
DOI:	10.1063/1.326524
Popis:	The passage of a short magnetically driven arc in air has been recorded simultaneously by means of differential interferometry and phase‐contrast photography. Correlation of these results with conventional high‐speed photographs reveals an abrupt change in refractive index in the gas preceding the visibly luminous region of the subsonic arc. Midchannel flow calculations and scaling trends indicate the refractive change is due to a front of high‐pressure air sustained primarily by molecular heat conduction from the arc core.
Databáze:	OpenAIRE
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