High Dynamic Range Retarding Potential Analyzer Operation Verification

Probe diagnostics of ion energy distribution and ion current density in the plasma plume of electric propulsion is considered. A detailed numerical and experimental comparison is presented of a new, high dynamic range retarding potential analyzer (HDR RPA) and a conventional gridded RPA probe applie...

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Bibliographic Details
Published in:Plasma physics reports 2024-09, Vol.50 (9), p.1142-1157
Main Authors: Maystrenko, D. A., Shagayda, A. A., Kravchenko, D. A., Tomilin, D. A., Selivanov, M. Yu
Format: Article
Language:English
Subjects:
Atomic
Dynamic range
Electric propulsion
Error analysis
Hall effect
Ion current density
Ion currents
Ion energy distribution
Molecular
Numerical models
Optical and Plasma Physics
Physics
Physics and Astronomy
Plasma Diagnostics
Retarding
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Summary:Probe diagnostics of ion energy distribution and ion current density in the plasma plume of electric propulsion is considered. A detailed numerical and experimental comparison is presented of a new, high dynamic range retarding potential analyzer (HDR RPA) and a conventional gridded RPA probe applied to a plume of a hall effect thruster (HET) operating in different modes. Simulations show the disadvantages of the gridded retarding potential analyzer design and the advantages of the HDR RPA. By means of numerical modeling, the peculiarities of using the HDR RPA are also investigated in detail and preliminary conclusions regarding the probe accuracy are drawn. The final part of the paper shows the results of joint tests of the two probes at those plasma parameters where the gridded probe works most accurately, with a confirmed maximum error of 5%.
ISSN:1063-780X
1562-6938
DOI:10.1134/S1063780X24601135