Title :
Phase resolved two-dimensional emission pattern of a low-frequency helium discharge
Author :
Ganguly, B.N. ; Garscadden, Alan
Author_Institution :
Wright Res. & Dev. Center, Wright-Patterson AFB, OH, USA
fDate :
2/1/1996 12:00:00 AM
Abstract :
Time resolved two-dimensional (2-D) plasma-induced emission patterns of the 33D to 23P transition in a three-torr low-frequency helium discharge have been measured. The emission patterns are found to be asymmetric for complementary phases of the current at 30-KHz excitation frequency, however, they are symmetric for 200-kHz excitation frequency. The excitation of the 30-KHz discharge is similar to that of a dc discharge with increasing and decreasing current
Keywords :
discharges (electric); helium; plasma diagnostics; plasma sheaths; 200 kHz; 3 torr; 30 kHz; DC discharge; He; asymmetric emission patterns; low-frequency He discharge; phase resolved two-dimensional emission pattern; symmetric emission patterns; Electrodes; Frequency; Helium; Phase measurement; Plasma applications; Plasma measurements; Plasma properties; Plasma sheaths; Spatiotemporal phenomena; Two dimensional displays;
Journal_Title :
Plasma Science, IEEE Transactions on
