Title :
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
fDate :
2/1/2002 12:00:00 AM
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;
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2002.1003966
