Janus modes of Hasegawa plasma waves in a streaming and tempestuous plasma pillar
- Authors
- Lee, Myoung-Jae; Chung, Kyu-Sun; Jamil, M.; Rasheed, A.; Jung, Young-Dae
- Issue Date
- Dec-2017
- Publisher
- AMER INST PHYSICS
- Citation
- PHYSICS OF PLASMAS, v.24, no.12, pp.1 - 8
- Indexed
- SCIE
SCOPUS
- Journal Title
- PHYSICS OF PLASMAS
- Volume
- 24
- Number
- 12
- Start Page
- 1
- End Page
- 8
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/8442
- DOI
- 10.1063/1.5008455
- ISSN
- 1070-664X
- Abstract
- Janus modes of the damping and growing of Hasegawa plasma waves are studied in a plasma pillar containing the dissipation and the beam energy deposition caused by tempestuous electrons and streaming ions. We find that the Janus modes split into the upper-and the lower-modes. For the upper-mode, the imaginary part of the wave frequency is negative for any parameters so that the corresponding Hasegawa space-charge plasma wave is always damped away. We found that the damping rate of the upper-mode decreases with a reduction of the pillar radius and a raising of the degree of the harmonic-roots. However, for the lower-mode, called lower-Janus mode, the wave can be either damped away or growing, depending on the wave number, streaming velocity, and geometric factor. The lower-Janus mode can be a pure growing wave with a reduction of the pillar radius. Interestingly, this growing mode turns to damping as the wave number decreases. Published by AIP Publishing.
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Collections - COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY > DEPARTMENT OF APPLIED PHYSICS > 1. Journal Articles
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