Emissive Probe

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True to its name, the emissive probe obtains its measurement (plasma potential) by emitting electrons to neutralize the Debye sheath surrounding the probe.

A comparison of emissive probe techniques for electric potential measurements in a complex plasma J. P. Sheehan, Y. Raitses, N. Hershkowitz, I. Kaganovich, and N. J. Fisch

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