Monolithic exploding foil initiator

DWPI Title: Monolithic exploding foil initiator i.e. slapper detonator, for detonating high explosives, has dielectric layer whose thickness suitable for ejection of flyer upon passage of actuating current through bridge of initiator metal structure
Abstract: A monolithic exploding foil initiator (EFI) or slapper detonator and the method for making the monolithic EFI wherein the exploding bridge and the dielectric from which the flyer will be generated are integrated directly onto the header. In some embodiments, the barrel is directly integrated directly onto the header.
Use: Monolithic exploding foil initiator i.e. slapper detonator, for detonating high explosives.
Advantage: The thickness of the dielectric layer is suitable for ejection of the flyer upon passage of the actuating current through the bridge of the initiator metal structure, thus yielding greater reliability operation and performance of the initiator in high-g-force environments. The dielectric layer ensures mechanical and environmental protection to all or part of the initiator metal structure and protects chemical integrity of the bridge metal over time, thus making operation of the device in a reliable manner.
Novelty: The initiator has an initiator metal structure whose bridge metal layer (20) is affixed to a top surface of an insulator element (14) and formed with an adhesion layer (22), a diffusion barrier layer (24) and a pattern. Pad regions of the pattern are in electrical contact with two feedthrough pins (16). Conductive pads (30) are arranged atop the pad regions. A dielectric layer (40) covers a bridge of the initiator metal structure. The dielectric layer includes thickness suitable for ejection of a flyer upon passage of an actuating current through the bridge.
Filed: 7/8/2010
Application Number: US2010832097A
Tech ID: SD 11131.1
This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention.
Data from Derwent World Patents Index, provided by Clarivate
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