Results are given of theoretical and experimental investigations of schemes of matching of magnetocumulative generator (MCG)div class=”Abstract”. : Magnetocumulative Generators (Shock Wave and High Pressure Phenomena): Larry L. Altgilbers, Mark D.J. Brown, Igor Grishnaev, Bucur M. This paper presents the results of a computer simulation of coaxial magnetocumulative current generators (MCGs). The simulation tests were carried out for.

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For this reason, reducing the area of the surface enclosed by a closed loop conductor with a magnetic field passing through it, which would reduce the magnetic flux, results in the induction of current in the electrical conductor, which tends to keep the enclosed flux at its original value.

Explosively pumped flux compression generator

Such generators can, if necessary, be utilised independently, or even assembled in a chain of successive stages: They are being investigated as power sources for electronic warfare devices known as transient electromagnetic devices that generate an electromagnetic pulse without the costs, side effects, or enormous range of a nuclear electromagnetic pulse device. International Journal of Quantum Chemistry.

By adding together the external magnetic field and the induced field, generafors can be shown that the tenerators result is that the magnetic field lines originally threading the hole stay inside the hole, thus flux is conserved, and a current has been created in the conductive ring. Energy weapons Microwave technology Pulsed power Soviet inventions Russian inventions. Suppose the ring is deformed, reducing its cross-sectional area.

The variation of the magnetic flux induces a current red arrows in the ring by Faraday’s law of inductionwhich in turn creates a new magnetic field circling the wire green arrows by Ampere’s circuital law. Views Read Edit View history. Explosively pumped flux compression generators are used to create ultrahigh magnetic fields in physics and materials science research [1] and generstors intense pulses of electric current for pulsed power applications.


The practical realization of high performance MK-2 systems required the pursuit of fundamental studies by a large team of researchers; this was effectively achieved byfollowing the production of generayors first MK-2 generator inand the achievement of currents over megaamperes from The technique is made possible when the time scales over which the device operates are sufficiently brief that resistive current loss is negligible, and the magnetic flux through any surface surrounded by a conductor copper wire, for example remains constant, even though the size and shape of the surface may change.

From Wikipedia, the free encyclopedia. Helical generators were principally conceived to deliver an intense current to a load situated at a safe distance. The purpose of the flux generator can be either the generation of an extremely strong magnetic field pulse, or an extremely strong electric current pulse; in the latter case the closed conductor is attached to an external electric circuit.

Maxwell; Goforth, James; Ekdahl, Carl At the start of the s, the need for very short and powerful electrical pulses became evident to Soviet scientists conducting nuclear fusion research. By using this site, you agree to the Terms of Use and Privacy Policy. genfrators

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In magneto-explosive generators, the reduction in area is accomplished by detonating explosives packed around a conductive tube or disk, so the resulting implosion compresses the tube or disk. The Marx generatorwhich stores geneeators in capacitors, was the only device capable at the time of producing such high power pulses.

Chvileva undertook the first experiment with this type of generator, with the goal of obtaining a very high magnetocumulwtive field. The simple basic principle of flux compression can be applied in a variety of different ways. The compression process partially transforms the chemical energy of the explosives into the energy of an intense magnetic field surrounded by a correspondingly large electric current. An EPFCG package that could be easily carried by a person can produce pulses in the millions of amperes and tens of terawatts.


This flux conservation can be demonstrated from Maxwell’s equations.

Explosively-driven helical magneto-cumulative generators

The magnetic flux threading the ring, represented by five field lines, is reduced by the same ratio as the area of the ring. An external magnetic field blue lines threads a closed ring made of a perfect conductor with zero resistance. An explosively pumped flux compression generator EPFCG is a device used to generate a high-power mxgnetocumulative pulse by compressing magnetic flux using high explosive.

Uspekhi Fizicheskikh Nauk in Russian. This page was last edited magnetocumulstive 28 Novemberat They are frequently used as the first stage of a multi-stage generator, with the exit current used to generate a very intense magnetic field in a second generator. The magnetic mqgnetocumulative lines are “pinched” closer together, so the average magnetic field intensity inside the ring increases by the ratio of the original area to the final area.

The nine field lines represent the magnetic flux threading the ring. In the spring ofR.

The most intuitive explanation of this conservation of enclosed flux follows from Lenz’s lawwhich says that any change in the flux through an electric circuit will cause a current in the circuit which will oppose the change. The new magnetic field opposes the field outside the ring but adds to the field inside, so that the total flux in the interior of the ring is maintained: Los Alamos Science Retrieved from ” https: The first magneto-explosive generators, which followed from the ideas of Andrei Sakharovwere designed to fill this role.

The prohibitive cost of the capacitors required to obtain the desired power motivated the search for a more economical device. Magneto-explosive generators use a technique called “magnetic flux compression”, described in detail below.