Fast sweeping probe system for characterization of spokes in E × B discharges

Skoutnev, V.; Dourbal, P.; Rodríguez, E.; Raitses, Y.

doi:10.1063/1.5053677

Title: Fast sweeping probe system for characterization of spokes in E × B discharges

Journal Article · 05 December 2018 · Review of Scientific Instruments

DOI: https://doi.org/10.1063/1.5053677 · OSTI ID:1512457

Skoutnev, V. ^[1];

^[1]; Rodríguez, E. ^[1];

^[1]

Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)

In this work, we developed a rapidly swept, back-to-back 100 kHz Langmuir probe system using a tunable compensating network to study the temporal evolution of low frequency oscillations in Penning discharges, Hall Thrusters, and other E × B discharges. Experimental validation of the probe system is performed at low and high sweeping frequencies in a stable Penning discharge. Then application of the probe system to measurements of plasma parameter fluctuations in a low frequency (4 kHz) rotating spoke and an analysis method using the Hilbert transform are shown. We proposs that the rotating spoke oscillation conducts approximately a third of the cross field current in our Penning device.

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Research Organization:: Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)

Sponsoring Organization:: Air Force Office of Scientific Research (AFOSR); USDOE

Grant/Contract Number:: AC02-09CH11466

OSTI ID:: 1512457

Journal Information:: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 12 Vol. 89; ISSN 0034-6748

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited By (4)

Plasma formation and cross-field electron transport induced by azimuthal neutral inhomogeneity in an anode layer Hall thruster Bak, Junhwi; Kawashima, Rei; Komurasaki, Kimiya Physics of Plasmas, Vol. 26, Issue 7 https://doi.org/10.1063/1.5090931	journal	July 2019
Boundary-induced effect on the spoke-like activity in E × B plasma Rodríguez, E.; Skoutnev, V.; Raitses, Y. Physics of Plasmas, Vol. 26, Issue 5 https://doi.org/10.1063/1.5092702	journal	May 2019
Modified high frequency probe approach for diagnostics of highly reactive plasma Sezemsky, Petr; Stranak, Vitezslav; Kratochvil, Jiri Plasma Sources Science and Technology, Vol. 28, Issue 11 https://doi.org/10.1088/1361-6595/ab506c	journal	November 2019
Boundary-induced effect on the spoke-like activity in ExB plasma Rodriguez, Eduardo; Skoutnev, Valentin; Raitses, Yevgeny arXiv https://doi.org/10.48550/arxiv.1903.01374	text	January 2019

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