Stochastic broadening of ion cyclotron resonances due to development of lower hybrid turbulence

• Published in: Physics letters. A Vol. 282; no. 1; pp. 31 - 35
• Main Authors: Suvorov, E.V., Ryndyk, D.A.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 09-04-2001
• Subjects: Beam–plasma instabilities; Low-hybrid waves; Plasma turbulence; 52.35.Qz; 52.35.Hr; Beam–plasma instabilities; Plasma turbulence; Low-hybrid waves; 52.35.Ra
• ISSN: 0375-9601; 1873-2429
• DOI: 10.1016/S0375-9601(01)00139-6

Theory of stochastic broadening of ion cyclotron resonances due to scattering of particles by turbulent rf fields has been applied to the problem of lower-hybrid wave instability excited by an energetic ion beam in a magnetized plasma. We show that resonance broadening play the major role in the case of hydrodynamic cyclotron instabilities. The closed set of equations has been derived and the time dynamics of LH turbulence has been investigated. We find that exponential growth is changed by power one
before quasilinear relaxation become essential.