Wall-association processes in expanding thermal hydrogen plasmas

Author

Mazouffre, S. ; Vankan, P. ; Kessels, W.M.M. ; Engeln, R. ; van de Sanden, M.C.M. ; Schram, D.C.

Author_Institution

Dept. of Appl. Phys., Eindhoven Univ. of Technol., Netherlands

Volume

30

Issue

1

fYear

2002

fDate

2/1/2002 12:00:00 AM

Firstpage

146

Lastpage

147

Abstract

The amount of ions and atomic radicals contained in an expanding thermal hydrogen plasma, which is produced by a wall-stabilized de arc, depends on the source nozzle geometry and material. The nature of the radiation emanating from the plasma jet is also influenced by the nozzle properties. In the light of experimental data obtained by means of laser-aided diagnostics, these striking facts can be explained by the wall-association processes of hydrogen atoms to form vibrationally excited hydrogen molecules

Keywords

arcs (electric); hydrogen neutral molecules; plasma jets; plasma-wall interactions; H₂; atomic radicals; expanding thermal H plasmas; laser-aided diagnostics; nozzle properties; plasma jet; source nozzle geometry; vibrationally excited H₂ molecules; wall association processes; wall-association processes; wall-stabilized DC arc; Atom lasers; Atomic measurements; Geometrical optics; Hydrogen; Optical materials; Plasma diagnostics; Plasma materials processing; Plasma properties; Plasma sources; Thermal expansion;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2002.1003966

Filename

1003966