Plasma non-equilibrium of the DC normal glow discharges in atmospheric pressure atomic and molecular gases

Autor:	Y.A. Safronau, S. M. Zgirouski, A. A. Kirillov, L. V. Simonchik, V. I. Arkhipenko
Rok vydání:	2012
Předmět:	Argon Materials science genetic structures Atmospheric pressure Plasma cleaning chemistry.chemical_element Plasma Nitrogen Atomic and Molecular Physics and Optics chemistry Physics::Plasma Physics Electric field Ionization Physics::Atomic and Molecular Clusters Atomic physics Helium
Zdroj:	The European Physical Journal D. 66
ISSN:	1434-6079 1434-6060
DOI:	10.1140/epjd/e2012-30359-x
Popis:	Electrical and spectroscopic results of comprehensive investigations of atmospheric pressure glow discharges in helium, argon, nitrogen and air in a large current range are presented. Our attention in these investigations is mainly focused on the characterization of positive column plasmas at discharge gap of 10 mm. It was shown that helium, nitrogen and air positive columns transform from diffuse to constricted mode when discharge current increases. In argon discharge, it is constricted in the whole range of investigated currents. Reduced electric field, gas temperature, average electron energy and electron concentration were determined. The positive column plasmas of all the atmospheric pressure glow discharges studied are non-equilibrium and weakly ionized. Plasma non-equilibrium degree in atomic gases of helium and argon is essentially higher than in molecular nitrogen and air. For all gases, plasma non-equilibrium degree in a positive column decreases with discharge current increase.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9ce3881e9ae7150840198349adebfcc2 https://doi.org/10.1140/epjd/e2012-30359-x Zobrazit plný text záznamu Full text from SpringerLink