https://doi.org/10.1140/epjp/s13360-022-03214-4
Regular Article
Nonlinear coupling of Alfvén waves in a driven magnetohydrodynamic turbulence
Fuel Cycle Research School, Nuclear Science and Technology Research Institute, Tehran, Iran
Received:
22
May
2022
Accepted:
20
August
2022
Published online:
15
September
2022
The features of parallel and antiparallel propagating nonlinear Alfvén wave modes were investigated, within the context of Hall-MHD system, in high-frequency plasma modulation regime. The results reveal that the Alfvén instability can be generated in an unstable regimes with the growth rate 
. The wave profile steepening can occur due to the coupling of Alfvén modes by the nonlinear transport mechanism of wave energy to high-frequency region of wave spectrum. The coupling leads to the generation of left-hand-polarized Alfvén wave followed by the right-hand-polarized wave packets in both cases of wave propagating parallel and antiparallel to the background magnetic field. These structures concerning to the interaction of excited Alfvén wave with beam–plasma instabilities can be important for particle heating and transport in space plasma systems as well as energetic particle loss in fusion plasmas.
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