Exactly solvable model of resonance tunneling of an electromagnetic wave in plasma containing short-scale inhomogeneities

Journal Article · Sun Feb 15 04:00:00 EST 2015 · Plasma Physics Reports

DOI:https://doi.org/10.1134/S1063780X14120022· OSTI ID:22472445

Zakharov, V. E.; Zol’nikova, N. N.; Mikhailovskaya, L. A. ^[1]

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1. Russian Academy of Sciences, Space Research Institute (Russian Federation)

Different variants of resonance tunneling of a transverse electromagnetic wave through a plasma layer containing short-scale (subwavelength) inhomogeneities, including evanescence regions to which approximate methods are inapplicable, are analyzed in the framework of an exactly solvable one-dimensional model. Complex plasma density profiles described by a number of free parameters determining the permittivity modulation depth, the characteristic scale lengths of plasma structures, their number, and the thickness of the inhomogeneous plasma layer are considered. It is demonstrated that reflection-free propagation of the wave incident on the layer from vacuum (the effect of wave-barrier transillumination) can be achieved for various sets of such structures, including plasma density profiles containing a stochastic component. Taking into account cubic nonlinearity, it is also possible to obtain an exact solution to the one-dimensional problem on the nonlinear transillumination of nonuniform plasma. In this case, the thicknesses of the evanescence regions decrease appreciably. The problem of resonance tunneling of electromagnetic waves through such barriers is of interest for a number of practical applications.

• OSTI ID: 22472445
• Journal Information: Plasma Physics Reports, Journal Name: Plasma Physics Reports Journal Issue: 2 Vol. 41; ISSN PPHREM; ISSN 1063-780X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ELECTROMAGNETIC RADIATION
EXACT SOLUTIONS
INHOMOGENEOUS PLASMA
LAYERS
MODULATION
NONLINEAR PROBLEMS
PERMITTIVITY
PLASMA DENSITY
PLASMA WAVES
REFLECTION
STOCHASTIC PROCESSES
TUNNEL EFFECT
WAVE PROPAGATION