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

Volume

33

Issue

2

fYear

2005

fDate

4/1/2005 12:00:00 AM

Firstpage

544

Lastpage

545

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;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2005.845370

Filename

1420568