Title :
Neutral depletion and plasma flows in a pulsed high power helicon plasma
Author :
Wiebold, Matt ; He, Ren ; Schare, John E.
Author_Institution :
Univ. of Wisconsin-Madison, Madison, WI, USA
Abstract :
In this paper, neutral depletion effects in a flowing, low pressure argon helicon discharge in a 10 cm diameter, 1.5 m long helicon source operating at 13.56 MHz with static magnetic fields up to 1 kG in both flat and nozzle configurations, are studied. An initial transient high density peak (>1014/cc), axial variation in the plasma density (>1012/cc), electron temperature (2-30 eV), and neutral depletion are observed. Observations of neutral depletion, plasma acceleration and the mechanisms responsible are also presented.
Keywords :
argon; discharges (electric); helicons; plasma density; plasma flow; plasma sources; plasma temperature; electron temperatures; frequency 13.65 MHz; helicon source; low pressure argon helicon discharge; neutral depletion; nozzle configurations; plasma acceleration; plasma density; plasma flows; pulsed high power helicon plasma; size 10 cm to 1.5 m; static magnetic fields; Argon; Electrons; Helical antennas; Helium; Plasma accelerators; Plasma density; Plasma measurements; Plasma sources; Plasma temperature; Radio frequency;
Conference_Titel :
Plasma Science - Abstracts, 2009. ICOPS 2009. IEEE International Conference on
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-4244-2617-1
DOI :
10.1109/PLASMA.2009.5227733
