Quasilinear theory of Brillouin resonances in rotating magnetized plasmas

Both spin and orbital angular momentum can be exchanged between a rotating wave and a rotating magnetized plasma. Through resonances the spin and orbital angular momentum of the wave can be coupled to both the cyclotron rotation and the drift rotation of the particles. It is, however, shown that the...

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Bibliographic Details
Published in:Journal of plasma physics 2023-07, Vol.89 (4), Article 905890408
Main Authors: Rax, J.-M., Gueroult, R., Fisch, N.J.
Format: Article
Language:English
Subjects:
Angular momentum
Charged particles
Cyclotron frequency
Cyclotron resonance
Electric fields
Exchanging
Magnetic fields
Orbital resonances (celestial mechanics)
Plasma
Plasma physics
Resonance
Rotating plasmas
Rotation
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Summary:Both spin and orbital angular momentum can be exchanged between a rotating wave and a rotating magnetized plasma. Through resonances the spin and orbital angular momentum of the wave can be coupled to both the cyclotron rotation and the drift rotation of the particles. It is, however, shown that the Landau and cyclotron resonance conditions which classically describe resonant energy–momentum exchange between waves and particles are no longer valid in a rotating magnetized plasma column. In this case a new resonance condition which involves a resonant matching between the wave frequency, the cyclotron frequency modified by inertial effects and the harmonics of the guiding centre rotation is identified. A new quasilinear equation describing orbital and spin angular momentum exchanges through these new Brillouin resonances is then derived, and used to expose the wave-driven radial current responsible for angular momentum absorption.
ISSN:0022-3778
1469-7807
DOI:10.1017/S0022377823000612