Обратная волна Ценнека вдоль плоской границы раздела сред

М.В. Давидович

doi:10.21883/os.2020.09.49864.330-20

Обратная волна Ценнека вдоль плоской границы раздела сред

Журнал технической физики ◽

10.21883/os.2020.09.49864.330-20 ◽

2020 ◽

Vol 128 (9) ◽

pp. 1269

Author(s):

М.В. Давидович

Keyword(s):

Surface Waves ◽

Medium Interface ◽

Slow Surface

We consider the surface Zennek wave along the plane boundaries of the vacuum-medium interface with isotropic permittivity, and the vacuum-medium described by isotropic dielectric and magnetic permittivity. In the latter case, we also consider the H-wave and the possibility of negative real parts of the permeability. Forward and backward waves at the boundary of a material with an inhomogeneous permittivity profile are considered. The conditions for the existence of forward and backward surface and volume waves, as well as fast and slow surface waves, are studied.

Download Full-text

Surface waves at vacuum/porous medium interface: low frequency range

Wave Motion ◽

10.1016/j.wavemoti.2003.07.004 ◽

2004 ◽

Vol 39 (2) ◽

pp. 111-127 ◽

Cited By ~ 9

Author(s):

Inna Edelman

Keyword(s):

Porous Medium ◽

Surface Waves ◽

Low Frequency ◽

Frequency Range ◽

Medium Interface

Download Full-text

Study of Slow Surface Waves in 70-GHz Solid-Plasma Waveguide Utilizing Maximum-Entropy Method

Japanese Journal of Applied Physics ◽

10.1143/jjap.25.215 ◽

1986 ◽

Vol 25 (Part 1, No. 2) ◽

pp. 215-222 ◽

Cited By ~ 1

Author(s):

Michiaki Kudo ◽

Tetsuo Obunai

Keyword(s):

Surface Waves ◽

Maximum Entropy ◽

Maximum Entropy Method ◽

Entropy Method ◽

Plasma Waveguide ◽

Slow Surface

Download Full-text

EXCITATION OF COUPLED ELECTRO–ACOUSTICAL WAVES BY A RING SOURCE IN A COMPRESSIBLE PLASMA CYLINDER

Canadian Journal of Physics ◽

10.1139/p64-061 ◽

1964 ◽

Vol 42 (4) ◽

pp. 638-656 ◽

Cited By ~ 18

Author(s):

S. N. Samaddar ◽

M. Yildiz

Keyword(s):

Surface Waves ◽

Plasma Waves ◽

Saddle Point Method ◽

Leaky Waves ◽

Plasma Cylinder ◽

Compressible Plasma ◽

Slow Surface ◽

Magnetic Ring ◽

Special Case ◽

Ring Source

Propagation of coupled electromagnetic and plasma waves (acoustical) excited by a magnetic ring current in an infinitely long compressible plasma cylinder surrounded by vacuum is studied. It is known that in an incompressible plasma a slow surface wave can propagate only when the electron–plasma frequency, ωP, is higher than the frequency, ω, of the source. However, in the present problem it is shown that under suitable conditions slow surface waves can propagate along the interface of the compressible plasma column and vacuum for values in the range either ωP > ω or ωP < ω. The surface waves for which ωp < ω are supposed to be a new phenomenon. Numerical results for these surface waves have been presented. In addition, an expression for a radiated field is obtained by the usual saddle-point method of integration. The possibility of the existence of leaky waves is also discussed for a special case.

Download Full-text

Propagation experiment on slow surface waves

Physics Letters A ◽

10.1016/0375-9601(76)90183-3 ◽

1976 ◽

Vol 57 (2) ◽

pp. 119-120

Author(s):

J. Marec ◽

P. Leprince

Keyword(s):

Surface Waves ◽

Slow Surface ◽

Propagation Experiment

Download Full-text

Standing MHD Waves in a Magnetic Slab Embedded in an Asymmetric Plasma Environment: Slow Surface Waves

The Astrophysical Journal ◽

10.3847/1538-4357/ab67b3 ◽

2020 ◽

Vol 890 (2) ◽

pp. 109 ◽

Cited By ~ 2

Author(s):

William Oxley ◽

Noémi Kinga Zsámberger ◽

Róbert Erdélyi

Keyword(s):

Surface Waves ◽

Mhd Waves ◽

Plasma Environment ◽

Slow Surface

Download Full-text

Two slow surface waves across North America*

Bulletin of the Seismological Society of America ◽

10.1785/bssa0420030219 ◽

1952 ◽

Vol 42 (3) ◽

pp. 219-228

Author(s):

Frank Press ◽

Maurice Ewing

Keyword(s):

North America ◽

Surface Waves ◽

Crustal Structure ◽

Large Amplitude ◽

Orbital Motion ◽

Initial Period ◽

The Other ◽

Wave Guide ◽

Surface Shear ◽

Slow Surface

Abstract Surface shear waves (Lg) with initial period about 1/2 to 6 sec. with sharp commencements and amplitudes larger than any conventional phase have been recorded for continental paths at distances up to 6,000 km. These waves have a group velocity of 3.51 ± .07 km/sec. and for distances greater than 20° they have reverse dispersion. For distances less than about 10° the periods shorten and Lg merges into the recognized near-earthquake phase Sg. An additional large amplitude phase in which the orbital motion of the particle is retrograde elliptical and the velocity is 3.05 ± .07 km/sec. has also been observed for continental paths. It is believed that these phases are propagated through a wave guide formed by a superficial sialic layer. The problem of explaining the propagation of these surface waves is that of finding a crustal structure which is consistent with the other data of geology and geophysics and which will provide a suitable wave guide for the new phases. A possible nature of the wave guide is described.

Download Full-text