Particle-in-cell simulations of anomalous transport in a Penning discharge

Carlsson, Johan; Kaganovich, Igor; Powis, Andrew; Raitses, Yevgeny; Romadanov, Ivan; Smolyakov, Andrei

doi:10.1063/1.5017467

Title: Particle-in-cell simulations of anomalous transport in a Penning discharge

Journal Article · Tue Apr 17 00:00:00 EDT 2018 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.5017467· OSTI ID:1464518

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Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States); Crow Radio and Plasma Science, Princeton, NJ (United States)
Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Princeton Univ., Princeton, NJ (United States)
Univ. of Saskatchewan, Saskatoon, SK (Canada)

Electrostatic particle-in-cell simulations of a Penning discharge are performed in order to investigate azimuthally asymmetric, spoke-like structures previously observed in experiments. Two-dimensional simulations show that for Penning-discharge conditions, a persistent nonlinear spoke-like structure forms readily and rotates in the direction of E × B and electron diamagnetic drifts. The azimuthal velocity is within about a factor of 2 of the ion acoustic speed. The spoke frequency follows the experimentally observed scaling with ion mass, which indicates the importance of ion inertia in spoke formation. The spoke provides enhanced (anomalous) radial electron transport, and the effective cross-field conductivity is several times larger than the classical (collisional) value. The level of anomalous current obtained in the simulations is in good agreement with the experimental data. Furthermore, the rotating spoke channels most of the radial current, observable by an edge probe as short pulses.

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

Sponsoring Organization:: USDOE

Grant/Contract Number:: FA9550-17-1- 0010

OSTI ID:: 1464518

Journal Information:: Physics of Plasmas, Vol. 25, Issue 6; ISSN 1070-664X

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

Country of Publication:: United States

Language:: English

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Cited by: 17 works

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Cited By (9)

Scaling of spoke rotation frequency within a Penning discharge Powis, Andrew T.; Carlsson, Johan A.; Kaganovich, Igor D. Physics of Plasmas, Vol. 25, Issue 7 https://doi.org/10.1063/1.5038733	journal	July 2018
Fast sweeping probe system for characterization of spokes in E × B discharges Skoutnev, V.; Dourbal, P.; Rodríguez, E. Review of Scientific Instruments, Vol. 89, Issue 12 https://doi.org/10.1063/1.5053677	journal	December 2018
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
Micro instabilities and rotating spokes in the near-anode region of partially magnetized plasmas Boeuf, J. P. Physics of Plasmas, Vol. 26, Issue 7 https://doi.org/10.1063/1.5102162	journal	July 2019
Controlling azimuthal spoke modes in a cylindrical Hall thruster using a segmented anode Shi, Yuan; Raitses, Yevgeny; Diallo, Ahmed Plasma Sources Science and Technology, Vol. 27, Issue 10 https://doi.org/10.1088/1361-6595/aae42b	journal	October 2018
Control of Coherent Structures via External Drive of the Breathing Mode Romadanov, I.; Raitses, Y.; Smolyakov, A. Plasma Physics Reports, Vol. 45, Issue 2 https://doi.org/10.1134/s1063780x19020156	journal	February 2019
Scaling of Spoke Rotation Frequency within a Penning Discharge Powis, Andrew T.; Carlsson, Johan A.; Kaganovich, Igor D. arXiv https://doi.org/10.48550/arxiv.1805.04438	text	January 2018
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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