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Comment on “The universal instability in general geometry” [Phys. Plasmas 22, 090706 (2015)]
Author(s) -
A. I. Smolyakov,
M. Yagi,
Y. Kishimoto
Publication year - 2016
Publication title -
physics of plasmas
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.75
H-Index - 160
eISSN - 1089-7674
pISSN - 1070-664X
DOI - 10.1063/1.4967766
Subject(s) - physics , instability , plasma , fusion , two stream instability , classical mechanics , quantum mechanics , philosophy , linguistics
It is pointed out that the destabilization mechanism recently discussed by Helander and Plunk in relation to the universal instability was studied previously by Smolyakov et al. [Phys. Rev. Lett. 89, 125005 (2002)]. Moreover, the contribution of the trapped particles as discussed by Helander and Plunk is closely related to the mechanism of the ubiquitous instability previously studied by Coppi and Pegoraro [Nucl. Fusion 17, 969 (1977)].

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