FW propagation and absorption in reactor plasmas in the ICR frequency range at the quasiperpendicular propagation

摘要

On the base of the numerical model, taking into account the strong transverse and longitudinal dispersion of plasma, the absorption and dispersion of the Fast Mode of fast magnetosonic wave (FW) near ICR harmonics ω=nωci at the quasiperpendicular propagation regime were investigated. It was shown that in the region of small longitudinal refractive index values NII there appears the additional absorption that provides the value of optical thickness τ being constant in the entire region of additional absorption. At first and second harmonics the additional absorption can be interesting for FW plasma heating in the reactor-size devices. For higher harmonics it can be important for HF diagnostic purposes and for investigation of astrophysical plasmas.