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Transient non-classical transport in the hollow cathode plume I: Measurements of time-varying electron collision frequency

Publication ,  Journal Article
Georgin, MP; Jorns, BA; Gallimore, AD
Published in: Plasma Sources Science and Technology
October 1, 2020

Electrostatic probes are employed to measure the time-variations in electron collision frequency due to a large-scale, low-frequency, plasma instability in a high-current hollow cathode plasma discharge (plume mode oscillation). Time-resolved measurements of ion acoustic turbulence are used to infer the effective collision frequency on the timescale of this underlying wave. Through a direct comparison, it is shown that the observed variation in the electron collision frequency cannot be described by classical collisional processes, i.e. Coulomb and neutral collisions, but rather is well represented by the changes in the anomalous collision frequency due to the turbulence.

Duke Scholars

Published In

Plasma Sources Science and Technology

DOI

EISSN

1361-6595

ISSN

0963-0252

Publication Date

October 1, 2020

Volume

29

Issue

10

Related Subject Headings

  • Applied Physics
  • 5106 Nuclear and plasma physics
  • 5102 Atomic, molecular and optical physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
 

Citation

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Georgin, M. P., Jorns, B. A., & Gallimore, A. D. (2020). Transient non-classical transport in the hollow cathode plume I: Measurements of time-varying electron collision frequency. Plasma Sources Science and Technology, 29(10). https://doi.org/10.1088/1361-6595/abb0ce
Georgin, M. P., B. A. Jorns, and A. D. Gallimore. “Transient non-classical transport in the hollow cathode plume I: Measurements of time-varying electron collision frequency.” Plasma Sources Science and Technology 29, no. 10 (October 1, 2020). https://doi.org/10.1088/1361-6595/abb0ce.
Georgin MP, Jorns BA, Gallimore AD. Transient non-classical transport in the hollow cathode plume I: Measurements of time-varying electron collision frequency. Plasma Sources Science and Technology. 2020 Oct 1;29(10).
Georgin, M. P., et al. “Transient non-classical transport in the hollow cathode plume I: Measurements of time-varying electron collision frequency.” Plasma Sources Science and Technology, vol. 29, no. 10, Oct. 2020. Scopus, doi:10.1088/1361-6595/abb0ce.
Georgin MP, Jorns BA, Gallimore AD. Transient non-classical transport in the hollow cathode plume I: Measurements of time-varying electron collision frequency. Plasma Sources Science and Technology. 2020 Oct 1;29(10).
Journal cover image

Published In

Plasma Sources Science and Technology

DOI

EISSN

1361-6595

ISSN

0963-0252

Publication Date

October 1, 2020

Volume

29

Issue

10

Related Subject Headings

  • Applied Physics
  • 5106 Nuclear and plasma physics
  • 5102 Atomic, molecular and optical physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics