D. A. Maystrenko, A. A. Shagayda, D. A. Kravchenko, D. A. Tomilin, M. Yu. Selivanov
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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 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%.
期刊介绍：
Plasma Physics Reports is a peer reviewed journal devoted to plasma physics. The journal covers the following topics: high-temperature plasma physics related to the problem of controlled nuclear fusion based on magnetic and inertial confinement; physics of cosmic plasma, including magnetosphere plasma, sun and stellar plasma, etc.; gas discharge plasma and plasma generated by laser and particle beams. The journal also publishes papers on such related topics as plasma electronics, generation of radiation in plasma, and plasma diagnostics. As well as other original communications, the journal publishes topical reviews and conference proceedings.
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