Experiments with explosively formed fuse opening switches in higher efficiency circuits

Goforth, J.H.; Lindemuth, I.R.; Marsh, S.P.; Reinovsky, R.E.

doi:10.1109/ppc.1989.767528

Cited by 8 publications

(1 citation statement)

References 1 publication

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“…A change that would improve the behaviour of the system for those applications in which a faster current rise time is needed is to use an existing circuit [14] adapted for parallel-plate transmission line geometry. The magnetic flux associated with the OS then remains within the main circuit after the action of the CS, and predictions show that this will produce a rise time of the PEOS input current up to the threshold opening value of less than 100 ns, giving a rise time of the load current of about 10 ns, which is in accordance with that used in PEOS experimentation elsewhere [2].…”

Section: The Numerical Modelmentioning

confidence: 99%

A two-stage exploding-foil/plasma erosion opening switch conditioning system

Stewardson¹,

Novac²,

Miran³

et al. 1997

J. Phys. D: Appl. Phys.

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When a load requiring a very fast rising current is fed from a flux-compression generator, it is necessary to introduce a conditioning circuit in order to reduce the rise time of the generator output current substantially. The final stage of this circuit will include a plasma erosion opening switch, which is the fastest known opening switch for use at the current levels involved. This paper presents results obtained during the development of a novel two-stage conditioning circuit and compares the experimental performance of the circuit with results provided by a computer simulation. A time compression of the rise time of the currents from microseconds to less than 100 ns was obtained, representing a 40-fold increase in the corresponding signals.

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Section: The Numerical Modelmentioning

confidence: 99%

A two-stage exploding-foil/plasma erosion opening switch conditioning system

Stewardson¹,

Novac²,

Miran³

et al. 1997

J. Phys. D: Appl. Phys.

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Calculational evaluation of plasma flow switches for the los alamos foil implosion project

Greene

Bowers²,

Oliphant³

et al.

7th Pulsed Power Conference

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A B S T R A C T The next system design under consideration for the Los Alamos Foil Implosion Project (Trailmaster) is projected to deliver in excess of 15 MA of electrical current produced by high-explosive driven flux compression generators to a foil load. A plasma flow switch is being investigated as the final pulse shaping step in this system. The performance of these switches is being evaluated using a wide variety of computational tools including zero-, one-and two-dimensional MHD codes and a 3-D view-factor radiation transport code. We are concerned with the effects of radiation from the switch plasma prior to switching current to the load, and the interaction of the switch plasma on existing perturbations and as a source of perturbation on the imploding load.

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