[en] A simple model of the discharge in rare gas halide lasers giving results in good accordance with available experimental data was developed. Conditions determining the steady-state value of the parameter E/P were studied. (author)

[en] A new way of using electromagnetic surface waves to sustain large volume plasmas of overcritical electron density is described. The diameter of the plasma column, obtained by using the present method, can be relatively large to both the free space wavelength and the dimensions of the wave launcher. (author)

[en] The authors studied theoretically and experimentally the discharge characteristics of pure hydrogen plasma and the problem how to carry out its stable discharge technically. It is concluded that the aim of the study was fulfilled satisfactorily. (author)

[en] Density and potential profiles of a stationary disturbance of current-carrying plasma caused by a floating metal disk in a longitudinal magnetic field were measured. Experimental results were obtained in the upstream region of electron flow, where the disturbance is characterized by a stationary accumulation of plasmas. Current distributions in the disturbance are shown. (author)

[en] Stark spectroscopy, which is used generally in low temperature plasma diagnostics, was applied to diagnose the parameters of hot turbulent helium plasma. Hydrogen-like spectral lines of helium ions were measured by Stark spectroscopy. The profiles of hydrogen-like He lines give information about the density, temperature, ionization degree and the turbulent character of helium plasma. (D.Gy.)

[en] Fast particles accelerated by strong electric field cause X-ray radiation in breakdowns of overstressed gaps. The region of high energy concentration is much lesser than the size of the interelectrode gap. The breakdown pulse front transforms itself in a shock wave front. The spatial and temporal structure of this transformation was investigated in visual, X-ray and high frequency range. The processes near the anode and cathode were separated from those inside the gap because of the good spatial resolution. The energy transfer process was followed in time in different procedures. (D.Gy.)

[en] A model is developed to describe the random aspects of the leader trajectory in a discharge gap. A simplified model of leader propagation is descried. It is stated that in spite of the introduced simplifications, the probability diffusion approximation derived is able to describe the random walk features of leaders in weakly non-uniform SF₆ gaps including the dependence of gas pressure, applied voltage and geometry. (author)

[en] An experiment was designed to study the temporal development of the afterglow of a high current arc discharge. Recovery of an extinguished arc discharge starts with a resistive phase in which the charged particle concentration is high. The duration of this period depends primarily on the recombination coefficient of the gas used but also on the gas pressure and dI/dt. Later the hot gas column behaves as a voltage-dependent resistor and finally as a dielectric gas. (author)

[en] A method for plasma electron density measurements is described. The method uses the competition effect between rotational levels of the rotation-vibration band of CO₂ at 10.6 μm. The investigated plasma, placed in the resonator cavity, changes the laser frequency and the resulting power changes of the competing lines are detected by a differential piezoelectric detector. The operating frequency is stabilized to the equal intensity point by the use of antenna effect stabilization. Measurement of the electron density in the helium plasma is made. (author)

[en] The pre-breakdown ionization process is investigated by mass spectroscopy of discharge species. Before the starting of the gaseous breakdown the spatial electron distribution increases. It is caused by ionization processes induced in atoms by the precursor electron flux. The products of electron impact, photo, auto and Penning ionization processes were analyzed by in-built mass spectrometer. The results depend on surface properties, electrochemistry and contamination of electrodes. (D.Gy.)