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High Dynamic Range Retarding Potential Analyzer Operation Verification
- Authors: Maystrenko D.A.1,2, Shagayda A.A.1, Tomilin D.A.1, Kravchenko D.A.1, Selivanov M.Y.1
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Affiliations:
- Keldysh Research Center
- Moscow Institute of Physics and Technology
- Issue: Vol 50, No 9 (2024)
- Pages: 1097-1115
- Section: PLASMA DIAGNOSTICS
- URL: https://medjrf.com/0367-2921/article/view/683719
- DOI: https://doi.org/10.31857/S0367292124090066
- EDN: https://elibrary.ru/DVCFKS
- ID: 683719
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Abstract
Probe diagnostics of ion energy distribution and ion current density in the plasma plume of electricpropulsion is considered. A detailed numerical and experimental comparison is presented of a new, highdynamic range retarding potential analyzer (HDR RPA) and a conventional gridded RPA probe applied to aplume of a hall effect thruster (HET) operating in different modes. Simulations show the disadvantages of thegridded retarding potential analyzer design and the advantages of the HDR RPA. By means of numericalmodeling, the peculiarities of using the HDR RPA are also investigated in detail and preliminary conclusionsregarding the probe accuracy are drawn. The final part of the paper shows the results of joint tests of the twoprobes at those plasma parameters where the gridded probe works most accurately, with a confirmed maximumerror of 5%.
About the authors
D. A. Maystrenko
Keldysh Research Center; Moscow Institute of Physics and Technology
Author for correspondence.
Email: maystrenko.da@phystech.edu
Russian Federation, Moscow, 125438; Moscow, 141701
A. A. Shagayda
Keldysh Research Center
Email: maystrenko.da@phystech.edu
Russian Federation, Moscow, 125438
D. A. Tomilin
Keldysh Research Center
Email: maystrenko.da@phystech.edu
Russian Federation, Moscow, 125438
D. A. Kravchenko
Keldysh Research Center
Email: maystrenko.da@phystech.edu
Russian Federation, Moscow, 125438
M. Yu. Selivanov
Keldysh Research Center
Email: maystrenko.da@phystech.edu
Russian Federation, Moscow, 125438
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