Journal ArticleDOI
Admittance Probe Method of Measuring Time Resolved Plasma Electron Temperatures
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TLDR
In this article, it was shown that the plasma electron temperature in electron volts is given by the product of the ion saturation current and the probe-to-plasma resistance at the floating potential.Abstract:
It is shown that the plasma electron temperature in electron volts is given by the product of the ion saturation current and the probe‐to‐plasma resistance at the floating potential. An ac capacitance bridge circuit is described which will measure this resistance with a response time that approaches the ion transit time across the sheath. The method is demonstrated by a measurement of electron temperature in the Wisconsin toroidal octupole.read more
Citations
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Low-frequency impedance characteristics of a langmuir probe in a plasma internal memorandum
F. W. Crawford,R. Grard +1 more
TL;DR: In this article, the authors measured the low frequency impedance of the Langmuir probe in plasma to obtain electron density and temperature in order to obtain the electron density, temperature, and electron density.
Journal ArticleDOI
Mirror Langmuir probe: a technique for real-time measurement of magnetized plasma conditions using a single Langmuir electrode.
Brian LaBombard,L. Lyons +1 more
TL;DR: The MLP technique represents a significant improvement over existing real-time methods, eliminating the need for multiple electrodes and sampling all three plasma parameters at a single spatial location.
Journal ArticleDOI
Diffusion Coefficient Scaling in the Wisconsin Levitated Octupole.
TL;DR: In this article, the authors measured cross-field diffusion in the levitated octupole using two independent methods: direct measurements of the particle flux onto an internal ring surface and the shape of the density profile and the time decay of density at the separatrix.
Journal ArticleDOI
Transition from classical to vortex diffusion in the Wisconsin levitated octupole
TL;DR: The transition from anomalous to classical regime is observed on a classical viscous damping time scale as mentioned in this paper, but the transition point corresponds to a nonthermal vortex spectrum with effective temperature, T*∼106 eV.
References
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Journal ArticleDOI
A Floating Double Probe Method for Measurements in Gas Discharges
E. O. Johnson,L. Malter +1 more
TL;DR: In this article, a double probe system is used to measure the plasma potential of a pair of probes joined by a variable potential source in varying or decaying plasmas, where the double probes are joined by the same potential source.
Low-frequency impedance characteristics of a langmuir probe in a plasma internal memorandum
F. W. Crawford,R. Grard +1 more
TL;DR: In this article, the authors measured the low frequency impedance of the Langmuir probe in plasma to obtain electron density and temperature in order to obtain the electron density, temperature, and electron density.
Journal ArticleDOI
Low‐Frequency Impedance Characteristics of a Langmuir Probe in a Plasma
F. W. Crawford,R. Grard +1 more
TL;DR: Plasma electron density and temperature from measurement of LF impedance of Langmuir probe, noting ionospheric probing as discussed by the authors. But this measurement was performed in the presence of an ionosphere.
Related Papers (5)
Low‐Frequency Impedance Characteristics of a Langmuir Probe in a Plasma
F. W. Crawford,R. Grard +1 more