Title :
Spatially Modulated Emission of ECR Plasmas in Helium
Author :
Durocher-Jean, A. ; Stafford, Luc ; Rojo, M. ; Dap, S. ; Makasheva, Kremena ; Clergereaux, Richard
Author_Institution :
Dept. of Phys., Univ. de Montreal, Montral, QC, Canada
Abstract :
Space modulation of the optical emission is observed in electron cyclotron resonance plasmas depending on the operating pressure. In contrast with low-pressure condition, where the plasma emission highlights a fairly homogeneous spatial structure, a spatial modulation appeared as the pressure increased: both color and intensity modulations were observed. This phenomenon is attributed to the establishment of a standing wave that modulate the plasma characteristics.
Keywords :
helium; optical modulation; plasma collision processes; plasma diagnostics; plasma radiofrequency heating; plasma waves; ECR plasmas; He; color modulations; electron cyclotron resonance plasmas; helium; homogeneous spatial structure; low-pressure condition; plasma emission; spatially modulated optical emission; standing wave; Electromagnetic heating; Helium; Inductors; Magnetic resonance; Microwave antennas; Modulation; Plasmas; Magnetic confinement; microwave plasma sources; plasma-waves interactions;
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2014.2337837
