Electron Saturation Current on a Cylindrical Probe in a Magnetized Rarefied Plasma Flow

A procedure for diagnosing a magnetized rarefied plasma using the electron saturation current on a cylindrical electric probe is developed. Approximate formulas and dependences of the electron saturation current on the angle between the probe axis and the external magnetic field induction vector and...

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Bibliographic Details
Published in:High temperature 2022-02, Vol.60 (1), p.1-7
Main Authors: Shuvalov, V. A., Kuchugurnyi, Yu. P., Kochubei, G. S., Nosikov, S. V.
Format: Article
Language:English
Subjects:
Atoms and Molecules in Strong Fields
Classical and Continuum Physics
Electrons
Industrial Chemistry/Chemical Engineering
Larmor radius
Laser Matter Interaction
Magnetic fields
Magnetic induction
Materials Science
Parameters
Physical Chemistry
Physics
Physics and Astronomy
Plasma Investigations
Rarefied plasmas
Saturation
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Summary:A procedure for diagnosing a magnetized rarefied plasma using the electron saturation current on a cylindrical electric probe is developed. Approximate formulas and dependences of the electron saturation current on the angle between the probe axis and the external magnetic field induction vector and on the scale parameters of the probe current collection (the probe and near-electrode layer radii and the Larmor radius of plasma electrons) are obtained. It is shown that, at angles greater than 65°, the electron current on a cylindrical probe in a magnetized plasma is equal to the electron saturation current in the zero external magnetic field. The presented formulas and dependences make it possible to determine the parameters of electrons in a magnetized rarefied plasma flow using two output signals: the probe current and the probe potential.
ISSN:0018-151X
1608-3156
DOI:10.1134/S0018151X22010230