GENERATION OF ALFVÉN WAVES IN MAGNETIZED PLASMA BY LASER PLASMA BUNCHES AT MACH NUMBERS MUCH LESS THAN UNITY
Journal Title: Solar-Terrestrial Physics - Year 2022, Vol 8, Issue 2
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.
Authors and Affiliations
Tishchenko V. N. , Berezutsky A. G. , Dmitrieva L. R. , Miroshnichenko I. B. , Shaikhislamov I. F.
Keywords
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- EP ID EP706793
- DOI 10.12737/stp-82202214
- Views 107
- Downloads 0
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