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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An explosively pumped flux compression generator EPFCG is a device used to generate a high-power electromagnetic pulse by compressing magnetic flux using high explosive. An EPFCG package that could be easily carried by a person can produce pulses in the millions of amperes and tens of terawatts.
Explosively pumped flux compression generators are used to create ultrahigh magnetic fields in physics and materials science research  and extremely intense pulses of electric current for pulsed power applications. 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.
At the start of the s, the need for very short and powerful electrical pulses became evident to Soviet scientists conducting nuclear fusion research. The Marx generatorwhich stores energy in capacitors, was the only device capable at the time of producing such high power pulses.
The prohibitive cost of the capacitors required to obtain the desired power motivated the search for a more economical device. The first magneto-explosive generators, which followed from the ideas of Andrei Sakharovwere designed to generator this role.
Magneto-explosive generators use a technique called “magnetic flux compression”, described in detail below. 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 mafnetocumulative surface surrounded by a conductor copper wire, for example remains constant, even though the size and shape of the surface may change.
This flux conservation can be demonstrated from Maxwell’s equations. 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. 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
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 compression process partially jagnetocumulative the chemical energy of the explosives into the energy of an intense magnetic field surrounded by a correspondingly large electric current. 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.
An external magnetic field blue lines threads a closed ring made of a perfect conductor magnetocumulatige zero resistance. The nine field lines represent the magnetic flux threading the ring.
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Suppose the ring is deformed, reducing its cross-sectional area. The magnetic flux threading the gsnerators, represented by five field lines, is reduced by the same ratio as the area of the ring.
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. 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: By adding together the external magnetic field and magnetocumulwtive induced field, it can be shown that the net 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.
Explosively-driven helical magneto-cumulative generators
The magnetic field 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 simple basic principle of flux compression can be applied in a variety of different ways.
Such generators can, if necessary, be utilised independently, or even assembled in a chain of successive stages: In the spring ofR. Chvileva undertook the first experiment with this type of generator, with the goal of obtaining a very high magnetic field.
Helical generators were principally conceived to deliver an intense current to a load situated at a safe distance. 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 practical realization of high performance MK-2 systems required the pursuit of fundamental studies by a generatofs team of researchers; this was effectively achieved byfollowing the production of the first MK-2 generator inand the achievement of currents over megaamperes from From Wikipedia, the free encyclopedia.
Explosively pumped flux compression generator – Wikipedia
International Journal of Quantum Chemistry. Uspekhi Fizicheskikh Nauk in Russian. Maxwell; Goforth, James; Ekdahl, Carl Los Alamos Science Retrieved from ” https: Energy weapons Microwave technology Pulsed power Soviet inventions Russian inventions.