METHOD OF LOCAL DIAGNOSTICS OF MAXWELL'S PLASMA BY SINGLE LANGMUIR PROBE Russian patent published in 2018 - IPC H05H1/00 

FIELD: physics.

SUBSTANCE: claimed method of local diagnosis of Maxwell's plasma using a single cylindrical Langmuir probe provides an introduction to the gas-discharge space of thin probe holder with a probe at the end in the form of a line of metallic yarn connected via source voltage probe to the metal casing of the gas-discharge device or additional supporting electrode. While steps are being taken to protect the probe circuit from electric pickups and building cleaning surface probe, recording its current-voltage characteristic by changing the probe voltage in both directions from the floating potential and determining the electron energy distribution function, the electron concentration, their temperature, and the plasma potential by processing the probe characteristic by one of the known methods. Then, the ion current density is measured per probe under a floating potential, used later to control the purity of the working gas or the state of the experimental vacuum technique.

EFFECT: expansion of the set of measured parameters of the plasma under investigation by determining the thickness of the probe layer and the ion mass in the case when the electron distribution function with respect to the plasma energies is close to the Maxwell function.

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