Nonlinear harmonics coupled by parallel wave propagations in a time-dependent plasma flow
SCIE
SCOPUS
- Title
- Nonlinear harmonics coupled by parallel wave propagations in a time-dependent plasma flow
- Authors
- Lee, Min Uk; YUN, GUNSU; JI, JEONG YOUNG
- Date Issued
- 2022-03
- Publisher
- Institute of Physics Publishing
- Abstract
- In a time-dependent flow, nonlinear harmonics can be excited by coupling between linear waves and flow-induced harmonic waves. Examining the dispersion relations and selection rules for the coupling, we investigate nonlinearly coupled harmonics for waves propagating along the magnetic field line in a magnetized plasma as well as waves in an unmagnetized plasma. The coupled harmonics in a plasma flow are described by the analytic dispersion relations and selection rules. This nonlinear coupling is corroborated by the particle-in-cell simulation. The coupled-harmonics model describes a mechanism for excitation of nonlinear harmonics from linear waves in a time-dependent flow. The spectral analysis of the dispersion relation provides a useful way to evaluate the spatiotemporal behavior of a plasma flow.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/110288
- DOI
- 10.1088/1361-6587/ac57cd
- ISSN
- 0741-3335
- Article Type
- Article
- Citation
- Plasma Physics and Controlled Fusion, vol. 64, no. 5, 2022-03
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- There are no files associated with this item.
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