Title :
Experimental observation of multiple double Layers structures in Plasma-part II: nonconcentric multiple double Layers
Author :
Ivan, L.M. ; Amarandei, G. ; Aflori, M. ; Mihai-Plugaru, M. ; Gaman, C. ; Dimitriu, D.G. ; Sanduloviciu, M.
Author_Institution :
Dept. of Plasma Phys., "Al. I. Cuza" Univ. of Iasi, Romania
fDate :
4/1/2005 12:00:00 AM
Abstract :
In certain experimental conditions, in front of a positively biased electrode immersed into a diffusion plasma, a concentric multiple double layers structure can appear. If the electrode is large or asymmetric (one dimension is larger than the others), this structure appears nonconcentrically, as many spherical luminous structures attached to the electrode. Each of these structure consists of a positive nucleus (an ion-rich plasma) bordered by an electrical double layer. The structures are almost equally distributed on the electrode because of the negative external shell of the double layer.
Keywords :
electrodes; plasma diagnostics; plasma sheaths; plasma transport processes; asymmetric electrode; concentric multiple double layers structure; diffusion plasma; electrical double layer; ion-rich plasma; negative external shell; nonconcentric multiple double layers; plasma multiple double layers structures; positively-biased electrode; spherical luminous structures; Anodes; Argon; Electrodes; Geometry; Ionization; Physics; Plasma density; Size control; Space charge; Surface discharges; Anode spots; multiple double layers; self-organization;
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2005.845370
