[en] To produce homogeneous along the channel length plasma the application of incomplete rate-in surface dielectric discharge for generating the bywalled plasma in prolonged cylindrical channels at a pressure of the residual gas of P approximately 10^-5 Torr is proposed. Experimental set-up consisted of a pulse voltage generator and a plasma channel. The plasma channel was a coaxial system of three tubes inserted into each other. The first outer tube is made of a stainless steel, the second - of a dielectric material, the third - of smallsized stainless steel greed. It is demonstrated that the plasma being formed in the process is sufficiently homogeneous by concentration of the components, by the channel length and azimuth. The length of the experimental channel under investigation was 1.6 m, its diameter amounted 0.05 m. The maximum concentration of electron component was 10¹⁷ m^-3

[en] Electron ring oscillates in an inhomogeneous magnetic field. Electron synchrotron radiation leads to the decrease in electron energy and generalized azimuthal momentum. The loss compensation is performed by means of electromagnetic fields of two resonators one of which creates a longitudinal, and the other-azimuthal electric fields. Recurrent relations for changing the energy, electron longitudinal velocity and voltage phase of the resonators during ring oscillation are obtained. Parameters of electron equilibrium motion are found, and its stability is investigated. The region of equilibrium phase values is determined at which stable equilibrium motion is possible

[en] A device has been elaborated in the system of a heavy-ion collective accelerator for relating a pulse magnetic field with a constant field of a superconducting solenoid. The device accomodates two-gap correcting coils of certain geometry. The geometry of the coils provides for permissible distortion in the limits of 15-30 Oe. To ensure superconductivity of the coils a copper screen 5 mm thick is employed. It provides for adequate screening at the external field frequency of 300 Hz and 4.2 K. In addition to the copper screen there are vacuum and nitrogen screens as well as a cryostat of stainless steel

No abstract available

[en] The results of investigations into the increase in effectivity of transport of an intensive relativistic electron beam (IREB) in a collisionless plasma of low density are presented. The electron beam with the current of 1.5 kA, energy of 300 keV, radius of 1.5 cm is in ected into a plasma channel 180 cm long which is a metallic cylinder covered with a biniplast layer from inside 0.5 cm thickness on which there is a metallic net from the vacuum side. Plasma production is carried out during the supply of voltage pulse to the net. A condition of the optimum IREB distribution is found. It is sohwn that self-focusing IREB transport in plasma of low density can be effective if equilibrium conditions are carried out in plasma with the concentration of electrons less (or equal) to the concentration of electrons in a beam

[en] The results of the experimental studies of the intense relativistic electron beam (IREB) propagation with ν/γ approximately 0.1, and γ approximately 1.6 (γ is an electron beam relativistic factor) in a collisionless plasma of small density over the 180 cm length are presented. Plasma is generated with the incomplete discharge over dielectric surface at the residual gas pressure of P approximately 10^-5 Torr. It is shown that the transportation efficiency may be essentially high, if the electron concentration in plasma satisfies the equilibrium conditions and if it is less or equal to the electron concentration in a beam. At concentration less than optimum one, the transportation efficiency decreases due to violations of equilibrium conditions. At high concentration the transportation efficiency also decreased due to the scattering and breaking on excited small-scale and plasma oscillations. The IREB propagation occurs without essential time delay under optimum conditions

[en] A problem of periodic motion of an electron ring in a heterogeneous magnet field has been considered. In one of the acceleration regions there are ions in the ring. The energy transferred to ions, is compensated during ring passage through resonator. Synchronous phase stability area as well as ion number and resonator field amplitude fluctuation tolerances have been determined

[en] A manifold using of electron ring for collective acceleration of ions is considered. The ring makes a periodical motion in inhomogeneous magnetic field. It is shown that synchrotron radiation is the main cause of losses of the ring electrons. The conditions are determined under which the minor radius of the ring makes stable oscillations. The manifold using of the ring allows to increase the ion current

[en] Presented are investigation results of heat pulse effect on copper plate, immersed in He-1 and He-2. For investigations is used the bench, consisting of a crystal 0.25 m in diameter, stabilized current source for supplying the temperature monitors, digital voltmeter for measuring temperature and temperature increase (jumps), pulse power source, fast response recorder, having in the range of 0-100 HZ at the speed of diagram motion up to 250 mm/s the recording constant equal to 20 mV/cm, oscillograph and devices for measuring the liquid helium level and the pressure of helium vapour. The investigated specimen is a 0.1x0.1 m flat plate 0.005 m thick, made of annealed MZ copper. The dependence of the specimen surface temperature change on the value of heat pulse is considered. The heat transfer coefficients in He-1 and He-2 are found. It is determined, that the highest pulse heat loading at minimal temperature drive can be obtained, using the liquid He-2 environment. Cryostabilization of superconducting objects at the pulse loading in subheated liquid He-1 is undesirable because of big (ΔT>1.0 K) temperature changes of the object surface

[en] A problem of phase stability of the periodic motion of an electron ring is considered. The ring oscillates in the non-uniform azimuthal-symmetric magnetic field. The magnetic field grows with a constant gradient in both directions from the point where a resonator is located. Fluctuations of the ion number in the ring cause phase forced oscillation. A relation has been obtained between tolerances for fluctuations of the ion number and the resonator field and the mean square of the phase fluctuation at a great number of ring oscillations