[en] The purpose of the invention is to increase efficiency of ion generation in diode type accelerator. This can be achieved by using suggested earthed electrode of the diode of the version of classical circuit for a double forming line (DFL), applied in electron accelerators. The suggested diode design is characterized by gate property with respect to electron current, therefore only ions from explosion-emission plasma are accelerated in accelerating gap. Ion generation proceeds under consistent conditions of DFL and diode operation and almost all the energy, accumulated in DFL, is transfered to ion beam. 2 figs

No abstract available

[en] A generator is described that provides at the load a pulse train with a repetition frequency of 10³-10⁶ Hz of higher. The pulses have an amplitude of up to 150 kV for a duration of 50 nsec. The generator contains two shaping and two transmission times of KVI-300 low-impedance cable, which are connected in series with the load. The shaping lines are powered by two independently triggered voltage-pulse generators to produce a pause between pulses of >10^-6 sec. Due to loss reduction in the discharge circuit, the amplitude of the second pulse increases with an increase in the pause between pulses of up to 300 nsec, beyond which the curve is saturated

[en] Results are presented of experimental investigation into an ion beam divergence angle and homogeneity of hevvy ion emission from a plasma generated on a patertial electrod (PE) in a diode vacuum gap. A multihole camera-olscura has been used for measuring the ion beam divergence angle. The beam divergence angle in the central part is measUred to be +-10 to 13 deg. The beam divergence at a distance from the PE centre made up +-5 to 6 deg for graphite PE. The method of heavy ion beam generation in combination with the ion camera-obscura is shown to be suitable for investigation into the expansion dynamics of an explosive-emission plasma

[en] This report describes two sources of high power ion beams of nanosecond duration. The first one produces ions with energy up to 125 keV, pulse duration from 20 to 200 ns, current density for heavy ions (Al⁺, Mg⁺, Fe⁺, W⁺, etc.) 1-2 A cm^-2 and energy of 12 to 120 J deposited by the beam. The second one produces, respectively, 300 kev, 50 ns, 40 to 200 A cm^-2 current of H⁺ and C⁺ ions and a kJ energy. The sources are powered by various diode systems and can be applied to scientific research and technology for materials science. (author)

No abstract available

No abstract available

[en] The results of investigation of the spectral composition of ion beams generated by the magneto-insulated ion diode of the MUK-M and TEMP accelerators. The energy and mass characteristics of the accelerated ion beam were determined by a Thomson spectrometer with a CR-39 plate detector (MOM - Atomki Nuclear Track Detector, Type MA-ND/p). The accelerated ion energy was from 40 to 240 keV. The ion current density range was from 1 to 10 A/cm². The mass composition contained hydrogen, nitrogen, carbon and aluminum ions. The individual track analysis showed the track form, depth and diameter in dependence on the ion mass and energy. (author). 2 figs., 5 refs

[en] Results of the development of the 300 keV industrial heavy ion accelerator for modification the surface layer of metals is described. The works were carried out in two directions: tuning of bi-pulse generator and investigation of heavy ion beam parameters for diode planar geometry. The generation of a power ion beam with the density up to 200 A/cm² (for carbon ions) and its interaction with metals are studied in parallel. The accelerator generator is the two single shaping lines and two transmission lines, connected in series. Graphite, magnesium, stainless steel and tungsten were used as material for a potential electrode (PE). It is shown, that mass composition of an ion beam, generated in the regime of direct acceleration from explosive emission plasma under conditions of oilless pumping, is mainly determined by PE material, and the state of its surface. It is concluded that the generation efficiency and energy spectra of ion beams with the given A/z ratio are determined by acceleration rate in anode-cathode gap, and with A/z rise at the given pulse duration of accelerating voltage the spectra shift into low-energy region is observed

[en] A generator permitting to shape on the load pulsed with the repetition frequency of 10³-10⁶ Hz and more is described. The amplitude of shaped voltage pulses is up to 150 kV at pulse duration equal to 50 ns. The generator comprises connected in-series with the load two shaping and two transmission lines realized on the base of the KVI-300 low-ohmic cable. The shaping lines are supplied from two independently connected pulse voltage generators for obtaining time interval between pulses > 10^-6 s; they may be also supplied from one generator for obtaining time interval < 10^-6 s. At the expense of reducing losses in the discharge circuit the amplitude of the second pulse grows with increase of time interval between pulses up to 300 ns, further on the curve flat-topping exists. The described generator is used in high-current accelerators, in which the primary negative pulse results in generation of explosive-emission plasma, and the second positive pulse provides ion beam shaping including ions of heavy metal used for production of a potential electrode. The generator multipulse mode is used for successive ion acceleration in the transport system