Absorption near the Lower Hybrid Resonance

TL;DRAbstract

The absorption of waves by an inhomogeneous magnetized plasma is analyzed in the frequency range from the ion cyclotron frequency to the lower hybrid resonance frequency. It is assumed that a cold collisionless plasma is contained in a ideally conducting cylindrical chamber and that oscillations are excited by an externally supplied kimuthal current. Numerical methods are used to investigate the dependence of the Q and radiation resistance of the current loop on the current frequency, plasma density, longitudinal magnetic field, and dimensions of the system. Also solved is the problem of the natural modes of the plasma volume near which the resonance absorption of plasma energy is observed. The results of the calculations are compared with existing experimental data. (auth)

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