Download Magnetic Flux Compression Experiments Using Plasma Armatures - NASA | ePub
Related searches:
4285 567 4849 4773 2596 2936 523 1055 93 39 4455 2699 50 2342 4067 3864 2507 4345
Magnetic-flux compression in cylindricaltargets an initial series of flux-compression experiments were carried out by embedding a seed magnetic field into cylindri- cal targets and are discussed in refs.
The imploding plasma column of a gas‐puff z pinch was used to compress an embedded axial magnetic field.
We report on the first successful cyclotron resonance experiment on a semiconductor in ultrahigh magnetic fields generated by explosive-driven flux compression. The sample under investigation was a p-type cubic gan layer grown by plasma-assisted mbe on a (0 0 1)-gaas substrate.
Sep 27, 2018 they were expecting to reach peak magnetic field intensities of around 700 in both the japanese and russian experiments, the magnetic fields were generated using a technique called electromagnetic flux-compression.
The maximum magnetic field obtained by the electro-magnetic flux compression technique was investigated with respect to the initial seed magnetic field.
Fundamental compression experiments mark 1 device measurement of plasma electrical conductivity is a critical need research goal is to investigate scientific and technological feasibility using non-nuclear detonations radial-mode, magnetic flux compression reactor •opposing he charges •radially expanding plasma armature.
Oct 1, 2000 abstract—explosively driven magnetic flux compression (mfc) has been object all explosive experiments were conducted inside an explo-.
Magnetic flux-compression results from two preliminary experiments with protective powder cascades and an initial field. The outer diameter of the aluminium powder cascade was 10 mm for pc-1 and 20 mm for pc-2. Main bank energy is 63 kj and liner (design h) material is aluminium.
In both the japanese and russian experiments, the magnetic fields were generated using a technique called electromagnetic flux-compression. This technique causes a brief spike in the strength of the magnetic field by rapidly squeezing it to a smaller size.
To examine plasma formation from conductors impinged upon by ultrahigh magnetic fields, in a geometry similar to that of the mago experiments, an experiment is under design to compress magnetic flux in a toroidal cavity, using the shiva star or atlas generator.
On megagauss magnetic field generation by explosives and related experiments,.
The magnetic compression experiment at general fusion was a repetitive non-destructive test to study plasma physics to magnetic target fusion compression. A compact torus (ct) is formed with a co-axial gun into a containment region with an hour-glass shaped inner flux conserver and an insulating outer wall.
The simulation results are compared with experimental data from two experiments with identical generators but with different seed currents, influencing the resistive losses. The model is used to analyze the performance of the generator. Keywords magnetic flux-compression generators (fcgs) national category.
Laser-driven flux compression (ldfc) is a technique used to compress the magnetic field in inertial confinement fusion (icf) targets driven by a laser. The compressed field in the icf target is beneficial to the target performance. Embedding a magnetic field in a conventional icf target reduces the heat loss if the central hot spot becomes magnetized.
Magnetic flux compression (mfc) generators are pulsed-power devices that take a small electrical current and amplify it by exploiting the conservation of magnetic flux. Essentially, an explosive is used to compress an initial magnetic flux into a smaller volume, increasing the output current.
Radio frequencies explosive magnetic flux compression generator radio frequencies explosive magnetic flux compression generator (rf mfcg) as a kind of maneuverable and compacted device for generating and radiating electromagnetic pulse is composed of a helical magnetic flux compression generator and a small capacitor [5-7].
A peak field of 1200 t was generated by the electromagnetic flux-compression (emfc) technique with a newly developed megagauss generator system. Magnetic fields closely up to the turn-around peak were recorded by a reflection-type faraday rotation magnetic-field optical-fiber probe.
Magnetic flux compression is a proven technique for the generation of ultrahigh magnetic fields, large currents, and large energy densities. The intent is to supply a few mega-amperes of seed-current for a fast high current when large capacitor banks are not available.
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 only ever generates a single pulse as the device is physically destroyed during operation.
Magnetic flux compression concepts merit reassessment for spacecraft applications, based on modern developments in target and reactor design principles.
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 can be used only once as a pulsed power supply since the device is physically destroyed during operation.
A set of explosively driven flux‐compression experiments with stainless steel liners and final fields in the range 2–6 mg is discussed. From experimentally determined field curves, the motion of the liner is derived by calculating the flux loss.
The maglif (magnetized liner inertial fusion) experiment at sandia national labs is one of the three main approaches to inertial confinement fusion. Radiographic measurements of the imploding liner have shown helical structuring that was not included in maglif scaling calculations but that could fundamentally change the viability of the approach.
In these experiments we will generate voltage moving a magnet through a coil. Lenz's law states that when an emf is generated by a change in magnetic flux.
Experiments applying laser-driven magnetic-flux compression to inertial confinement fusion (icf) targets to enhance the implosion performance are described. Spherical plastic (ch) targets filled with 10 atm of deuterium gas were imploded by the omega laser, compare phys.
Students should wear eye protection and should only connect the power when taking measurements.
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 can be used only once as a pulsed power supply because the device is physically destroyed during operation.
The armature is also machined from aluminum and filled with a comp-b explosive fill. Tests were conducted to map the performance of the generator at several.
The smrt magnetic compression experiment was designed as a repetitive non- destructive test to study plasma physics applicable to magnetic target fusion compression. 600 500 400 300 200 100 0 ka 0 20 40 60 80 µs 0 -8 -6 -4 -2 0 2 kv 0 t e figure 1: smrt schematic.
The latter are due to retarded breakdown in the wire insulation and to the finite decay time of the magnetic field in the wire.
Calculations indicated the same arrangement would be used for laboratory experiments, including.
An ultra-high magnetic field above 100 t can be artificially generated in the pulsed mode by using techniques such as the single-turn coil (stc)1, electro-magnetic flux compression (emfc)2,3, chemical-explosive flux compression(ce-fc)4-6, lase r-driven flux compression.
Flux: the rate of transfer of energy (or another physical quantity) through a given surface, specifically electric flux or magnetic flux. Faraday’s law of induction faraday’s law of induction is a basic law of electromagnetism that predicts how a magnetic field will interact with an electric circuit to produce an electromotive force (emf).
Gov conference: magnetic flux compression experiments on the z pulsed-power accelerator.
Apr 1, 2009 experiments were conducted with loop magnetic flux compression generator ( lfcg).
Explosive-driven magnetic-flux-compression generators have been around since the early 1950s, when they were independently invented in the united states and the former soviet union. Interest in these generators has been cyclic over the years and we appear to be in the upswing of renewed interest, not only in the us and russia but other countries as well.
Roscopic magnetic fields have so far been generated only by magnetic flux compression in metallic liners driven by chemical detonation10 and pulsed-power generators. 11 strong magnetic fields have also been measured and inferred from z-pinch gas puff experiments on pulsed-power generators.
Numerical experiment on initial magnetic flux compression by a multiwire -pinch abstract: this paper presents a 3-d magnetohydrodynamic simulation of an initial magnetic flux compression using a multiwire cylindrical array in z-θ-pinch configuration.
Experiments with and modelling of explosively driven magnetic flux compression generators kth school of electrical.
Sixty years after the first magnetic flux compression experiments were performed, it is now appropriate to attempt a classification of the various devices that are known collectively as either magnetic flux-compression generators or magnetocumulative generators. This paper summarises the main characteristics on which such a classification of generators can conveniently be based, with emphasis.
Magnetic flux compression reaction chambers offer considerable promise for controlling the plasma flow associated with various micronuclear/chemical pulse propulsion and power schemes, primarily.
Generation of ultrahigh magnetic fields is an interesting topic of high-energy-density physics, and an essential aspect of magnetized target fusion (mtf). To examine plasma formation from conductors impinged upon by ultrahigh magnetic fields, in a geometry similar to that of the mago experiments, an experiment is under design to compress magnetic flux in a toroidal cavity, using the shiva star.
The experiments were selected to show both versatility and limitations of the devices. Generator principles are derived from lumped parameter circuit theory.
Magnetic flux compression reactors appear to offer one plausible means of meeting the rigorous propulsion and power requirements. For instance, discuss several pulsed magnetic flux compression reactor configurations of potential interest. 1 in these devices, the expanding diamagnetic plasma cloud produced by a detonation.
Flux compression generator experiments centered around the use of simple helical explosive generators. These experiments drove further development of explosive experiment infrastructure and diagnostic techniques, and provided benchmarking data for design and analysis codes.
Aug 9, 2019 fields for magneto-inertial fusion experiments at the omega facility. The pulser uses a driven magnetic-flux compression in high-energy-.
Fast magnetic flux compression in a z-pinch like geometry is known to suffer from hydrodynamic instabilities that develop during the cylindrical implosion. One way of overcoming this problem is to use the dielectric-metallic phase transition in a shock-compressed semiconductor crystal or metallic powder, a technique initiated by japanese and russian researchers working with explosive-driven.
Ended helical flux compression generator experiments using 300gm of high explosive were started.
Despite my very limited knowledge on magnetic fields and nuclear fusion being a high school student; i am curious whether you can take a perfect hollow sphere; and (if possible) wrap magnet wire around the shell in such a way that has a magnetic field on the inside of the container.
Jul 22, 2017 the fluid remains in the liquid state even while being controlled, moved, or kinetically interacted with a magnetic field.
Flux-compression (or magnetic cumulative) generators provide a compact and relatively inexpensive source of energy for use in experimentation at remote sites.
Demonstration of a magnetic locking flux-pinned revolute joint for use on cubesat-standard spacecraft.
Post Your Comments: