Double layer-like structures in the core of an argon helicon plasma source with uniform magnetic fields
- Department of Engineering Physics, University of Wisconsin—Madison, Madison, Wisconsin 53706 (United States)
A hot (T{sub e} ≈ 10 eV) electron population is observed in the core of a 3 mTorr argon helicon plasma source at 500 W RF power and 900 G uniform axial magnetic field strength, 12 cm from the edge of the helicon antenna. A double layer-like structure consisting of a localized axial electric field of approximately 8 V/cm over 1–2 cm is observed adjacent to the hot electron population. The potential step generated by the electric field is shown to be large enough to trap the hot electrons. To our knowledge this is the first observation of these structures in the core of a helicon discharge.
- OSTI ID:
- 22251998
- Journal Information:
- Physics of Plasmas, Vol. 21, Issue 2; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
Similar Records
Ion acceleration in a helicon source due to the self-bias effect
Uniformity measurements in a helicon plasma etcher
Boltzmann expansion in a radiofrequency conical helicon thruster operating in xenon and argon
Journal Article
·
Tue May 15 00:00:00 EDT 2012
· Physics of Plasmas
·
OSTI ID:22251998
Uniformity measurements in a helicon plasma etcher
Conference
·
Sun Dec 31 00:00:00 EST 1995
·
OSTI ID:22251998
Boltzmann expansion in a radiofrequency conical helicon thruster operating in xenon and argon
Journal Article
·
Mon Jun 03 00:00:00 EDT 2013
· Applied Physics Letters
·
OSTI ID:22251998