Resonant transparency of a two-layer plasma structure in a magnetic field

Abstract

Transparency of a two-layer plasma structure in an external steady-state magnetic field, perpendicular to the wave incidence plane, is studied. The case of the p-polarized electromagnetic wave is considered. The electromagnetic wave is obliquely incident on the two-layer structure and is evanescent in both layers. The conditions for total transparency of the two-layer structure are found. The parametric dependencies of the transparency coefficient on the plasma slab widths, the magnitude of the wave number component, as well on the magnetic field magnitude are obtained.

Transmission of electromagnetic waves through a two-layer plasma structure with spatially nonuniform electron density

“…(24) and (25) that in the case of total transparency, u 1 (−a 1 ) = u 2 (a 2 ). (26) In the general case, there is not an analytical solution of Eqs. (24)- (26).…”

“…Effects of electron temperature and an external magnetic field on transparency of the overcritical density layer due to excitation of evanescent waves were studied in Refs. [24,26]. However, in most of the studies on transmission of p-polarized electromagnetic waves through nonuniform plasma, single-layer plasma structures were considered.…”

A new method for removing the blackout problem on reentry vehicles

“…It applies to spacecraft entering an atmosphere such as the reentry of the space shuttle, hypersonic vehicles like the scramjet or the Mars Pathfinder. 1 Many different methods for removing the plasma layer have been proposed [2][3][4] and supported by theory, [5][6][7][8][9] computer simulations, 10,11 and laboratory experiments. [12][13][14] The plasma can be quenched by gas releases (H 2 O, SF 6 ), static magnetic fields allowing propagation of whistler modes, 15 electron acoustic modes occurring in non-Maxwellian plasmas 16 or nonlinear waves 17 and E Â B flows created by discharges on the surface of the vehicle have been proposed and partly tested in laboratory plasmas.…”

Negative Refraction in a Lossy Plasma Layer

“…In the following we numerically investigate the refractive angle 𝜃 t for both TE and TM waves by applying Eqs. ( 7) and (8). We note that there are four selective parameters, i.e., plasma frequency 𝜔 p , incident frequency 𝜔, collisional frequency 𝛾 and incident 065202-2 angle 𝜃 t .…”