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- Slapper_detonator abstract "A slapper detonator, also called exploding foil initiator (EFI), is a relatively recent kind of a detonator developed in Lawrence Livermore National Laboratory. It is an improvement of the earlier exploding-bridgewire detonator; instead of directly coupling the shock wave from the exploding wire, the expanding plasma from an explosion of a metal foil drives another thin plastic or metal foil called a "flyer" or a "slapper" across a gap, and its high-velocity impact on the explosive (for example, PETN or hexanitrostilbene) then delivers the energy and shock needed to initiate a detonation. Normally all the slapper's kinetic energy is supplied only by the heating (and hence expansion) of the plasma (the former foil) by the current passing through it, though constructions with a "back strap" to further drive the plasma forward by magnetic field exist too. This assembly is quite efficient; up to 30% of the electrical energy can be converted to the slapper's kinetic energy.The initial explosion is usually caused by explosive vaporization of a thin metal wire or strip, by driving several thousands amperes of electric current through it, usually from a capacitor charged to several thousand volts. The switching may be done by a spark gap or a krytron.Usually the construction consists of an explosive booster pellet, against which a disk with a hole in the center is set. Over the other side of the disk, there is a layer of an insulating film, for example, Kapton or PET film, with a thin strip of metal (typically aluminum or gold) foil deposited on its outer side. A narrowed section of the metal then explosively vaporizes when a current pulse passes through it, which shears the mylar foil and the plasma ball pushes it through the hole, accelerating it to very high speed. The impact then detonates the explosive pellet.Advantages over explosive-bridgewire detonators include: The foil does not come in contact with the explosive, which reduces the risk of corrosion of the foil or chemical reactions between the foil and explosive producing unstable compounds, and secondarily further reduces the risk of accidental electrical ignition of the explosive. The energy to fire the detonator is quite low The slapper pellet impacting an area of explosives rather than a single point as in an EBW is more reliable and efficient at initiating detonation. The explosive can be pressed to higher density Very insensitive explosives can be initiated directly.In a variant called laser detonator the vaporization can be caused by a high-power laser pulse delivered over-the-air or coupled by an optical fiber; this is reportedly used as a safety detonator in some mining operations and quarries. Typically a 1-watt solid-state laser is used.The slapper detonators are frequently used in modern weapon designs and aerospace technology.For the description of the required firing system, see Firing system for exploding-bridgewire detonator.".
- Slapper_detonator thumbnail SlapperDiag.png?width=300.
- Slapper_detonator wikiPageExternalLink Nfaq4-1.html.
- Slapper_detonator wikiPageExternalLink Modelling-and-Simulation-of-Burst-Phenomenon-in-Electrically-Exploded-Foils.
- Slapper_detonator wikiPageID "2145977".
- Slapper_detonator wikiPageLength "4382".
- Slapper_detonator wikiPageOutDegree "27".
- Slapper_detonator wikiPageRevisionID "544051474".
- Slapper_detonator wikiPageWikiLink BoPET.
- Slapper_detonator wikiPageWikiLink Capacitor.
- Slapper_detonator wikiPageWikiLink Category:Detonators.
- Slapper_detonator wikiPageWikiLink Category:Lawrence_Livermore_National_Laboratory.
- Slapper_detonator wikiPageWikiLink Detonation.
- Slapper_detonator wikiPageWikiLink Detonator.
- Slapper_detonator wikiPageWikiLink Exploding-bridgewire_detonator.
- Slapper_detonator wikiPageWikiLink Explosive.
- Slapper_detonator wikiPageWikiLink Explosive_booster.
- Slapper_detonator wikiPageWikiLink Explosive_material.
- Slapper_detonator wikiPageWikiLink Explosive_train.
- Slapper_detonator wikiPageWikiLink Hexanitrostilbene.
- Slapper_detonator wikiPageWikiLink Kapton.
- Slapper_detonator wikiPageWikiLink Krytron.
- Slapper_detonator wikiPageWikiLink Laser.
- Slapper_detonator wikiPageWikiLink Lawrence_Livermore_National_Laboratory.
- Slapper_detonator wikiPageWikiLink List_of_laser_types.
- Slapper_detonator wikiPageWikiLink Magnetic_field.
- Slapper_detonator wikiPageWikiLink Mining.
- Slapper_detonator wikiPageWikiLink Nuclear_weapon_design.
- Slapper_detonator wikiPageWikiLink Optical_fiber.
- Slapper_detonator wikiPageWikiLink PETN.
- Slapper_detonator wikiPageWikiLink PET_film_(biaxially_oriented).
- Slapper_detonator wikiPageWikiLink Pentaerythritol_tetranitrate.
- Slapper_detonator wikiPageWikiLink Plasma_(physics).
- Slapper_detonator wikiPageWikiLink Quarry.
- Slapper_detonator wikiPageWikiLink Spark_gap.
- Slapper_detonator wikiPageWikiLink Triggering_sequence.
- Slapper_detonator wikiPageWikiLink File:SlapperDetArea.png.
- Slapper_detonator wikiPageWikiLink File:SlapperDiag.png.
- Slapper_detonator wikiPageWikiLinkText "Slapper detonator".
- Slapper_detonator wikiPageWikiLinkText "exploding foil initiators".
- Slapper_detonator wikiPageWikiLinkText "slapper detonator".
- Slapper_detonator hasPhotoCollection Slapper_detonator.
- Slapper_detonator wikiPageUsesTemplate Template:Citation_needed.
- Slapper_detonator subject Category:Detonators.
- Slapper_detonator subject Category:Lawrence_Livermore_National_Laboratory.
- Slapper_detonator type Article.
- Slapper_detonator type Article.
- Slapper_detonator type Institute.
- Slapper_detonator comment "A slapper detonator, also called exploding foil initiator (EFI), is a relatively recent kind of a detonator developed in Lawrence Livermore National Laboratory.".
- Slapper_detonator label "Slapper detonator".
- Slapper_detonator sameAs Slapperzünder.
- Slapper_detonator sameAs スラッパー起爆式雷管.
- Slapper_detonator sameAs m.06q4p3.
- Slapper_detonator sameAs Слэппер-детонатор.
- Slapper_detonator sameAs Q2293733.
- Slapper_detonator sameAs Q2293733.
- Slapper_detonator wasDerivedFrom Slapper_detonator?oldid=544051474.
- Slapper_detonator depiction SlapperDiag.png.
- Slapper_detonator isPrimaryTopicOf Slapper_detonator.