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Generation of Alfvén waves in magnetized plasma by laser plasma bunches at Mach numbers much less than unity
- Source :
- Solar-Terrestrial Physics, Vol 8, Iss 2, Pp 91-97 (2022)
- Publication Year :
- 2022
- Publisher :
- INFRA-M, 2022.
-
Abstract
- In this paper, we examine a torsional Alfvén wave produced by periodic plasma bunches in a magnetized plasma flux tube. A new effect has been revealed: the wave is generated not only during the action of bunches, but also for a long time after the termination, which makes it possible to increase the wavelength by several times. We have determined the conditions under which the wave contains η~40 % of the total bunch energy. The wave radius depends on the energy of one bunch; and the length, on their number. The optimum number of bunches is 15. Simultaneously with the Alfvén wave, a bunch plasma jet (η~35 %) and a slow magnetosonic wave (η~10 %) propagate in the force tube. Similarity parameters scale the results to laboratory and near-Earth magnetized plasma.
- Subjects :
- plasma bunches
magnetic field
alfvén wave
numerical simulation
Astrophysics
QB460-466
Subjects
Details
- Language :
- English
- ISSN :
- 82202214 and 25000535
- Volume :
- 8
- Issue :
- 2
- Database :
- Directory of Open Access Journals
- Journal :
- Solar-Terrestrial Physics
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.25ed90f14b1d42819c56b57f74264d02
- Document Type :
- article
- Full Text :
- https://doi.org/10.12737/stp-82202214