Engineering Papers⌕ Search

Engineering topics

Smolyakov, A I

Publications and source records attributed to Smolyakov, A I.

Kinetic theory of electromagnetic plane wave obliquely incident on bounded plasma slab

The effects of electromagnetic plane waves obliquely incident on a warm bounded plasma slab of finite length L are studied by solving the coupled Vlasov-Maxwell set of equations. It is shown that the solution can be greatly simplified in the limit where thermal effects are most important by expanding in small parameters and introducing self-similar variables. These solutions reveal that the coupling of thermal effects with the angle of incidence is negligible in the region of bounce resonance and anomalous skin effect. In the region of the anomalous skin effect, the heating is shown to scale linearly with the anomalous skin depth {delta}{sub a} when {delta}{sub a}<<L, in agreement with previous authors. Furthermore, for {delta}{sub a}>>L, the heating is shown to decay with 1/{delta}{sub a}{sup 3}. The transmission is found to be exponentially larger than that predicted from a local theory in the appropriate region of the anomalous skin effect.

70 PLASMA PHYSICS AND FUSION TECHNOLOGY↗

What physics does affect the MRI threshold

Several physical effects, which can considerably decrease the magnetorotational instability (MRI) threshold are discussed. First, we show that MRI features are changed significantly in non-uniform magnetic field. Second, the buoyancy effect is shown to can be destabilizing for azimuthal flow of a resistive plasma. Third, we demonstrate that the rotating fluid may be unstable with respect to non-axisymmetric modes at much lower rotation velocities than with respect to usual symmetric modes.

71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSIC↗