INFLUENCE OF THE WALL MATERIAL ON N ATOM DENSITY IN A DOWNSTREAM NITROGEN PLASMA

Authors
RICARD A POPESCU A BALTOG A LUNGU CP
Citation
A. Ricard et al., INFLUENCE OF THE WALL MATERIAL ON N ATOM DENSITY IN A DOWNSTREAM NITROGEN PLASMA, Le Vide, 52(280), 1996, pp. 248
Citations number
7
Categorie Soggetti
Physics, Applied","Materials Science, Coatings & Films
Journal title
Le Vide → ACNP
ISSN journal
12660167
Volume
52
Issue
280
Year of publication
1996
Database
ISI
SICI code
1266-0167(1996)52:280<248:IOTWMO>2.0.ZU;2-N
Abstract
The effect of several wall materials on N atom destruction in N-2 D.C. flowing post-discharge has been studied from the N-2 first positive i ntensity. The gamma-destruction probability of N atoms in the post-dis charge tube containing several material foils has been determined form a kinetics analysis of volume (homogenous) and surface (heterogeneous ) recombination processes. It has been found that the value of Teflon is as for Pyrex (gamma similar to 10(-5)), gamma=3 (+/-1) x 10(4) for plastic, gamma=6(+/-3) x 10(4) for oxidized aluminium and gamma > 2 x 10(3) for copper.