Collisional damping rates for electron plasma waves reassessed

Banks, J. W.; Brunner, S.; Berger, R. L.; Arrighi, W. J.; Tran, T. M.

doi:10.1103/PhysRevE.96.043208

Collisional damping rates for electron plasma waves reassessed

Journal Article · Fri Oct 13 00:00:00 EDT 2017 · Physical Review E

DOI:https://doi.org/10.1103/PhysRevE.96.043208· OSTI ID:1409933

Banks, J. W. ^[1]; Brunner, S. ^[2]; Berger, R. L. ^[3]; Arrighi, W. J. ^[3]; Tran, T. M. ^[2]

Rensselaer Polytechnic Institute, Troy, NY (United States). Department of Mathematical Sciences
Ecole Polytechnique Federale de Lausanne (EPFL), Swiss Plasma Center (SPC), Lausanne (Switzerland)
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Collisional damping of electron plasma waves, the primary damping for high phase velocity waves, is proportional to the electron-ion collision rate, ν_ei,th. Here in this work, it is shown that the damping rate normalized to ν_ei,th depends on the charge state, Z, on the magnitude of ν_ei,th and the wave number k in contrast with the commonly used damping rate in plasma wave research. Only for weak collision rates in low-Z plasmas for which the electron self-collision rate is comparable to the electron-ion collision rate is the damping rate given by the commonly accepted value. The result presented here corrects the result presented in textbooks at least as early as 1973. Lastly, the complete linear theory requires the inclusion of both electron-ion pitch-angle and electron-electron scattering, which itself contains contributions to both pitch-angle scattering and thermalization.

View Accepted Manuscript (DOE)

Research Organization:: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC52-07NA27344

OSTI ID:: 1409933

Alternate ID(s):: OSTI ID: 1399290

Report Number(s):: LLNL-JRNL--703319

Journal Information:: Physical Review E, Journal Name: Physical Review E Journal Issue: 4 Vol. 96; ISSN 2470-0045

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Spatial propagation and damping of ordinary electromagnetic mode Khokhar, Tajammal H.; Yoon, P. H.; López, R. A. Physics of Plasmas, Vol. 25, Issue 8 https://doi.org/10.1063/1.5043356	journal	August 2018
Theory of the Drift-Wave Instability at Arbitrary Collisionality Jorge, R.; Ricci, P.; Loureiro, N. F. Physical Review Letters, Vol. 121, Issue 16 https://doi.org/10.1103/physrevlett.121.165001	journal	October 2018
Theory of the Drift-Wave Instability at Arbitrary Collisionality Jorge, R.; Ricci, P.; Loureiro, N. F. arXiv https://doi.org/10.48550/arxiv.1806.10538	text	January 2018

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