Luminous Activity of Nitrogen and Argon Afterglows Issued From Dielectric Barrier Discharges at Atmospheric Pressure

In this paper, a "long" atmospheric pressure N₂ dielectric-barrier-discharge afterglow is presented. It is a rather spectacular experiment obtained when the (under high gas flow) discharge effluents are channeled in long tubes of small diameter. The snapshots of the long afterglow are shown in pure N₂ and N₂-Ar afterglows. The luminosity of the afterglow denotes that active species created during the discharge can be transported in long distances, which could be useful in a variety of applications.