Multipurpose transformer-type pulse generator

Luchinskii, A. V.; Ratakhin, N. A.; Fedushchak, V. F.; Shepelev, A. N.

doi:10.1007/bf02524306

Cited by 28 publications

(5 citation statements)

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“…The MIG terawatt facility [40][41][42] is a multipurpose pulse generator that provides a current of amplitude up to 2.5 MA with a rise time of 100 ns. The MIG generator is designed consisting of a line pulse transformer, water pulse-forming lines, and a load.…”

Section: Methodsmentioning

confidence: 99%

“…The aim of this work was to reveal the features of the propagation of such an SW and of the formation of a high-temperature dense plasma, which is a powerful x-ray source, at the pinch axis. The experiments were carried out on the MIG highcurrent pulse generator [40][41][42] at a current level of about 2 MA. The results of the experiments were analyzed using one-dimensional radiation magnetohydrodynamic (RMHD) simulations.…”

Section: Introductionmentioning

confidence: 99%

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Studies on the implosion of pinches with tailored density profiles

Oreshkin

Baksht

Cherdizov

et al. 2021

Plasma Phys. Control. Fusion

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This paper presents the results of experimental and theoretical studies of imploding metal-puff Z-pinches. The experiments were carried out on the MIG high-current pulse generator at a current level of about 2 MA and a current rise time of about 100 ns. A plasma gun was used to produce a plasma column with a tailored density profile through which the main electromagnetic pulse of the MIG generator was passed. The experiments have shown that pinches of this type, being compressed, are resistant to dynamic magneto-Rayleigh–Taylor (MRT) instabilities. The experimental results were analyzed using one-dimensional radiation magnetohydrodynamic simulations. It has been shown that in a pinch with a tailored density profile, the formation of a high-temperature plasma at the pinch axis and the generation of x-rays occur at the stagnation stage, i.e. under conditions close to Bennett equilibrium. At this stage, flute-like MRT instabilities develop, causing the pinch to decay.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Studies on the implosion of pinches with tailored density profiles

Oreshkin

Baksht

Cherdizov

et al. 2021

Plasma Phys. Control. Fusion

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“…The results of its high-voltage tests are also given. The radiographic source of soft x-ray radiation based on the generator with the use of X pinch will be used to investigate extreme states of materials carried out with the MIG generator at the High-Current Electronics Institute of the Siberian Branch of the Russian Academy of Sciences [5] and to study the electric explosion of microconductors.…”

Section: Discussionmentioning

confidence: 99%

“…Nowadays, these current pulse parameters can be provided only by bulky stationary generators weighing from 300 kg to several tons. The disadvantages of both configurations substantially limit the opportunities of the examined technique used to study physics of extreme states, since large stationary experimental systems, as a rule, are used in these studies [4,5]. Therefore, the development and manufacture of a portable current pulse generator with the above-indicated parameters will allow the researchers to achieve a new level of transient process diagnostics.…”

Section: Introductionmentioning

confidence: 99%

A compact pulse generator for radiographic source supply

et al. 2007

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631.374.2 N. V. Zharova, N. A. Zhidkova, S. A. Chaikovskii, and V. I. OreshkinRadiography of short-living objects using X-pinch radiation is a new perspective direction in diagnostics developed at the P. N. Lebedev Institute of Physics. High spatial (up to a few tenth of a micrometer) and temporal resolutions (up to 0.1 ns) achieved with the use of the X pinch is extremely interesting to the researches of transient processes and substances in extreme states. The X pinch is produced by two or more crossed wires (with wire diameters up to 30 µm) exploded under the influence of current running through them. Scanning radiation is generated in a dense high-temperature plasma (up to several kiloelectron volts) arising in the region of wire crossing. Among the main requirements on the generator used to create the X pinch are current amplitudes of 150-300 kA and rates of current increase of 1-2 kA/ns. Up to now, these current pulse parameters have been provided only by bulky stationary generators weighing from 300 kg to several tons. In the present paper, a small-size (weighing 70 kg) high-current pulse generator (with current amplitude exceeding 300 kA and pulse rise time of 200 ns) of soft x-ray radiation from high-temperature X-pinch plasma is described.

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“…Experiments on an electric explosion of conduc tors (EEC) were carried out on a MIG setup [13], whose electric power reaches 2 TW. A MIG generator is a multipurpose pulsed generator that can operate under various conditions irrespective of the type of load [14,15].…”

Section: Experimental Studies On a Mig Generatormentioning

confidence: 99%

Phase transformations of carbon under extreme energy action

et al. 2012

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Experiments are performed on a high current MIG generator (current amplitude 2.5 MA, current rise time 100 ns) to synthesize diamond like carbon forms. Magnetohydrodynamic calculations carried out before the experiments show that the conditions required for synthesizing diamond like structures appear during the compression of copper tubes 2-4 mm in diameter filled with graphite. The explosion products are analyzed on an EM 125 diffraction transmission electron microscope. During an explosion, the entire graph ite is found to transform into cubic carbon: crystals with the simple cubic lattice and a lattice parameter a = 0.5545 nm and with the face centered cubic lattice and a = 0.3694 nm are detected. The crystallite size is 5-25 nm.

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Multipurpose transformer-type pulse generator

Cited by 28 publications

References 0 publications

Studies on the implosion of pinches with tailored density profiles

Studies on the implosion of pinches with tailored density profiles

A compact pulse generator for radiographic source supply

Phase transformations of carbon under extreme energy action

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