Magnetic flux compression

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Magnetic Flux Compression, as treated in this paper, is accomplished by high explosives. Flux is first captured in a closed conducting circuit, of which some or all of the conducting elements are overlaid with high explosives. Upon detonation of the explosives, these elements are driven in such a fashion as to compress the flux into regions of smaller areas or, in engineering terminology, into regions of lower inductance. The magnetic energy associated with the flux is increased by the flux compression. The additional energy is ultimately supplied by the explosive as it drives the conductors against the magnetic field pressure, ... continued below

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Pages: 13

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Fowler, C.M. January 1, 1989.

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Magnetic Flux Compression, as treated in this paper, is accomplished by high explosives. Flux is first captured in a closed conducting circuit, of which some or all of the conducting elements are overlaid with high explosives. Upon detonation of the explosives, these elements are driven in such a fashion as to compress the flux into regions of smaller areas or, in engineering terminology, into regions of lower inductance. The magnetic energy associated with the flux is increased by the flux compression. The additional energy is ultimately supplied by the explosive as it drives the conductors against the magnetic field pressure, which in some cases may be in the megabar range. Various names in common use for flux compression devices are flux compression generators (FCG), magneto-cumulative generators (MCG), particularly in the USSR, or simply, flux compressors. FCGs are generally used in two broadly defined categories: as compact, high-power sources to drive various loads: and as generators of very large magnetic fields. In this talk, general principles of flux compression are first discussed. This is followed by a description of several applications in which different types of FCGs are used to supply pulsed power to various devices. The talk closes with a discussion of results obtained from a number of experiments done to explore the properties of materials in very large magnetic fields or under nearly isentropic compression. As requested, the work reported here surveys the Los Alamos program. However, sources cited in the bibliography contain much of the extensive literature in the field. Individual papers cited have been selected partly to highlight other groups that have been active in the field. 25 refs., 15 figs.

Physical Description

Pages: 13

Notes

NTIS, PC A03/MF A01 - OSTI; 1.

Source

  • American Physical Society topical conference on shock compression of condensed matter, Albuquerque, NM, USA, 14-17 Aug 1989

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  • Other: DE89016991
  • Report No.: LA-UR-89-2656
  • Report No.: CONF-890812-30
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 5841064
  • Archival Resource Key: ark:/67531/metadc1099464

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Office of Scientific & Technical Information Technical Reports

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  • January 1, 1989

Added to The UNT Digital Library

  • Feb. 18, 2018, 3:59 p.m.

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  • May 23, 2018, 2:11 p.m.

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Fowler, C.M. Magnetic flux compression, article, January 1, 1989; New Mexico. (digital.library.unt.edu/ark:/67531/metadc1099464/: accessed December 10, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.