دورية أكاديمية
Transition from unstable electrostatic confinement to stable magnetic confinement in a helicon reactor operating with Ar∕SF₆ gas mixtures
| العنوان: | Transition from unstable electrostatic confinement to stable magnetic confinement in a helicon reactor operating with Ar∕SF₆ gas mixtures |
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| المؤلفون: | Corr, C. S., Plihon, N., Chabert, P. |
| المصدر: | Journal of Applied Physics |
| بيانات النشر: | American Institute of Physics (AIP) |
| المجموعة: | Australian National University: ANU Digital Collections |
| مصطلحات موضوعية: | Keywords: Argon, Carrier concentration, Diffusion, Electrostatics, Magnetic fields, Mixtures, Negative ions, Wave propagation, Electronegativity, Electrostatic barrier, Electrostatic confinement, Gas mixtures, Helicon reactor, Helicon wave propagation, Magnetic con |
| الوصف: | Two types of instabilities were previously identified in inductive discharges having an expanding chamber when negative ions are present: (i) the sourceinstability, occurring in the neighborhood of the capacitive-to-inductive (E to H) transition, and (ii) the downstream instability, which was shown to be the periodic formation and propagation of double layers. These unstable double layers were found over the entire parameter space (pressure/power) of interest, and they were born at the interface of the source and diffusion chambers. They acted as an internal electrostatic barrier separating a low-electronegativity, high-electron-density plasma upstream (in the source) and a high-electronegativity, low-electron-density plasma downstream. In this paper we have investigated the effect of adding a static axial magnetic field, classically used to increase the confinement and the plasma heating via helicon wave propagation. This had the following consequences: (i) the unstable double layers, and therefore the axial electrostatic confinement, were suppressed in a large part of the parameter space, and (ii) the magnetic confinement leads to a radially stratified plasma, the center being a low-electronegativity, high-density plasma and the edges being essentially an ion-ion plasma. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | unknown |
| تدمد: | 0021-8979 |
| العلاقة: | http://hdl.handle.net/1885/16387Test; https://openresearch-repository.anu.edu.au/bitstream/1885/16387/4/corr_JAP_2006.pdf.jpgTest; https://openresearch-repository.anu.edu.au/bitstream/1885/16387/7/01_Corr_Transition_from_unstable_2006.pdf.jpgTest |
| DOI: | 10.1063/1.2191431 |
| الإتاحة: | https://doi.org/10.1063/1.2191431Test http://hdl.handle.net/1885/16387Test https://openresearch-repository.anu.edu.au/bitstream/1885/16387/4/corr_JAP_2006.pdf.jpgTest https://openresearch-repository.anu.edu.au/bitstream/1885/16387/7/01_Corr_Transition_from_unstable_2006.pdf.jpgTest |
| حقوق: | http://www.sherpa.ac.uk/romeo/issn/0021-8979Test."Publishers version/PDF may be used on author's personal website, institutional website or institutional repository" from SHERPA/RoMEO site (as at 6/11/15). Copyright 2006 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Journal of Applied Physics and may be found at https://doi.org/10.1063/1.2191431Test |
| رقم الانضمام: | edsbas.3B56B25 |
| قاعدة البيانات: | BASE |
| تدمد: | 00218979 |
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| DOI: | 10.1063/1.2191431 |