No abstract available

No abstract available

[en] A high-voltage nanosecond pulse generator designed for synchronous triggering of several sharping MV spark gaps is described. The generator comprises a low-inductive capacitive storage with a controllable gas-filled commutator, transmission system having several parallel connected cable lines, a circuit of commutator triggering, the main elements of which comprise an decoupling resistor a controllable gas-filled spark gap and a drive-pulse generator. It generates pulses with the amplitude of 300-200 kV, pulse rise of 7-20 ns when varying the common impedance of lines of the transmission system from 50 to 9 Ohm. The generator triggering system provides stability of triggering time ± 10 ns at induction of the decoupling circuit up to several dozens μH

[en] A simple and reliable commutation system of Arkadjev-Marx high-voltage pulse generator with a wide range of stable operation and high time characteristics is described. Uncontrollable spark gaps with an auxiliary ignition electrode are used in the system. Width of the range of stable operation equals U_c/U_min=2.2-2.8 at optimal combination of polarities of ignition and charging voltages, where U_c is the voltage of the generator uncontrollable operation, U_min is minimum charging voltage, at which reliable operation of the generator is observed

[en] 0.1 TW power and up to 2 MV amplitude pulse generator with ∼1.5 ns front is described. The Arkadiev-Marx voltage pulse generator charges low-inductive condenser (1.8 nF) and radial line (0.9 nF) up to ∼2 MV voltage during 200 ns. When voltage maximum is reached water discharger in the centre of radial line is actuated and pulse with ∼2.5 MV amplitude that is transmitted by oil-filled line is formed on its end. Aggravating discharger in oil with metallic diaphragm that reduces passing capacity of a gap up to 5 pF and ensures stability of wave resistance of radial line on aggravator output to the lead, is switched on at the end of line. Cutting discharger is provided in a design for operation under short pulse mode. Up to 20 ns duration pulse is generated at the load equivalent correlated with the line. 4 refs.; 4 figs

[en] A controlled nanosecond multiaction solid spark gap is described. Its triggering performances depending on the material of solid dielectric, amplitude of the ignition pulse and operating modes are studied. The spark gap provides delay time equal to 20 ns with spread of 1.5-3 ns under energy commutation of the capacitive storage of 70 kJ and charging voltage of 1-10 kV

[en] The construction of an electrostatic accelerator to produce an intense ion beam is proposed. The high voltage pulse to be used in the acceleration of the ions (500 kV, 1 μs) will be provided by a Marx generator. Using this pulses, a high total current proton beam (>200 KA) will be extracted from a magnetically insulated diode with an anode plasma produced by an inductive breakdown of hydrogen gas. The beam will be injected into a magnetic confinement device, a tokamak to be called ETA (Experimento Toroidal Avancado), to study heating, refueling and noninductive current generation in toroidal plasmas. (author)

[en] Six-stage Arkadiev-Marx generator with the voltage of upto 300 kV and repetition rate upto 100 pulses/s is described. Generator is aimed at forming charged particle high current beams and pulses of hard x radiation, electrical distruction and materials treatment, gas laser pumping. Generator capacitance in discharge is 1.7 or 4.2 nF, peak energy in a pulse 180 J, the pulse half height duration during capacitive load is 3-4.5 μs. Estimation of generator commutation system lifetime have shown that it is limited by the service life of controlled spark gaps and is ∼ 10⁷ operations

[en] Units of two- and three-electrode spark gaps for Arkadiev-Marx power generators made of parallel-switched modules are developed and tested. Design and assembly technique of units which provide for stability of module operation with 10 ns root-mean-square spread, are described. Break-through strength of spark gaps is controlled by pressure measurement

[en] A coaxial device to tranfer electric energy from a pulsed generator to a low-impedance shaping line whose commutation brings about powerful short voltage pulses is described. To damp pulses the internal conductor of the device is enveloped by the element of volumetrically resitant material, and controlled discharge are placed between the external conductor of the device and the element. The device operated efficiency when the radical lines were charged from the Arkadiev-Marx generator during 1 μs up to 500 kV