Ionization waves (strata) in a bounded low-temperature plasma

Resonant properties of a positive column with excitation of induced strata are considered. The mechanism of steady-state amplitude buildup is established, and the conditions for the soft and hard modes of intrinsic strata excitation are obtained. The conditions under which strata are suppressed when the system is acted upon asynchronously by modulation of the discharge currents are investigated. The analysis is carried out for a bounded positive column using the generally accepted model [1, 3].Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Radiofizika, Vol. 21, No. 11, pp. 1691–1701, November, 1978.     

Frequency changes and refraction of radio waves propagating through the plasma around the sun

Institute of Radio Engineering and Electronics, Academy of Sciences of the USSR, Moscow. Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Radiofizika, Vol. 33, No. 9, pp. 1007–1012, September, 1990.     

Parametric instability of dust lattice waves in a turbulent plasma sheath

It is shown that dust lattice waves (DLWs) become parametrically unstable in a turbulent dusty plasma sheath that contains random-phase ion plasma waves. Physically, the parametric instability arises because of the nonlinear coupling between ion plasma waves and DLWs. The parametric instability is identified as the possible reason for the observed "sublimation" transition of the plasma crystal from a solid to a gaslike state.     

Nonlinear scattering of longitudinal waves in a weakly turbulent relativistic plasma

Nonlinear scattering of Langmuir waves of small amplitude in an isotropic relativistic Maxwellian plasma is investigated. The coefficient of nonlinear scattering of waves in a relativistic plasma is calculated, and the weak relativistic and ultrarelativistic asymptotes of the expression obtained for this coefficient in the long-wave approximation are also found.Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 2, pp. 53–56, February, 1982.     

Propagation of radio waves across a velocity discontinuity in a zero temperature plasma

A non-relativistic treatment of the investigated effect is given. It is shown that a transverse wave incident on the interface of a velocity discontinuity generates reflected and transmitted waves. The intensities of reflected and transmitted electric fields are calculated.The author's thanks are due to Mrs. E. Dosoudilová for executing the numerical computations.     

Temporal broadening of pulsed waves propagating through turbulent media

Pulse signals, propagating through a turbulent medium such as the ionosphere, can be distorted by dispersion and scattering from both the background medium and irregularities embedded in. Thus, the mean square pulse width is changed, and temporal broadening is introduced. We carry out a study on the temporal broadening with theoretical analyses and numerical simulations by using an analytical solution of two-frequency mutual coherence function obtained recently by iteration. As a case of study, pulse broadening is investigated in detail in trans-ionospheric propagation. Results show that most contributions are mainly from the dispersion of the background ionosphere and scattering effects of electron density irregularities in most cases.     

Polarization of radio emission of the turbulent plasma of solar flares

We present a mechanism for the appearance of circular polarization due to the scattering of electromagnetic radiation by the turbulent pulsations of a plasma with a magnetic field. The application of this mechanism to the turbulent plasma of solar flares is discussed.