Abstract
A new type of scrape-off layer plasma instability associated with radial inhomogeneity of plasma density, contact of plasma with conducting material surfaces, and neutral recycling is presented. In order to elucidate the physics of this instability, the simplest possible setup is analyzed.
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ACKNOWLEDGMENTS
The author acknowledges useful discussions with Drs. D.D. Ryutov and A.I. Smolyakov.
Funding
This work was supported by the US Department of Energy, Office of Science, Office of Fusion Energy Sciences, under Awards nos. DE-SC0018302 and DE-FG02-04ER54739 at UCSD.
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The author dedicates this paper to Prof. V.A. Kurnaev, who prematurely passed away recently. Shortly before Prof. Kurnaev passed away, the author had promised him to submit a paper on edge plasma physics to Plasma Physics Reports.
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Krasheninnikov, S.I. On “Recycling” Instability of the Scrape-off Layer Plasma. Plasma Phys. Rep. 47, 407–409 (2021). https://doi.org/10.1134/S1063780X21050044
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DOI: https://doi.org/10.1134/S1063780X21050044