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Defense Intelligence Reference Document Pulsed High-Power Microwave Source Technology

Defense Intelligence Agency · 37 pages · text from the file's own layer

This Defense Intelligence Reference Document from the Defense Intelligence Agency, dated 28 January 2010, surveys pulsed high-power microwave (HPM) source technology. It was produced under the Advanced Aerospace Weapon System Applications (AAWSA) program. It covers insulation, cathode materials, high-voltage switching, pulse generators, microwave sources such as magnetrons, gyrotrons and the Phoenix and Jolt sources, and antennas. The document concludes that progress depends on advances in cathodes, switching and insulation. It says compact ultrawideband antennas will remain difficult to build.

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“Works”9 pages

  • p. 9 …to the design and fabrication of a working HPM source. First, because the pulsed-power section…
  • p. 10 …For the past 20 years, engineers have worked with essentially the same plastic materials, although some…
  • p. 12 …Scientists have for years worked to extend the usefulness of transformer oils, fuorinert, and castor oil…
  • p. 15 …This technique works because the conductor is the source of electrons, without which breakdown will not…
  • p. 16 …A review of pure metals reveals a direct correlation between the work function (r.,.,) and melting…
  • p. 17 …This material works by means of the dielectric-metal surface flashover mechanism mentioned earlier. Five steps…
  • p. 18 …Cesium is a pure metal that has a work function of only 1.9 eV and…
  • p. 24 …EXPLOSIVELY DRIVEN GENERATORS Explosively driven generators, also called flux compression generators (FCGs), work by setting up…
  • p. 25 …These sources work by converting the kinetic energy of an electron beam into EM energy. BWOs…
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Figure 10. Jolt Hyperband HPM Source ................................................................. 24
Figure 11. Jolt Radiated Electric Field Waveform at 85 Meters ............................. 24
Figure 12. FLAPS Antenna With a Cross-Shorted Dipole Array ............................. 26
Figure 13. Mode Converter Vlasov Antenna and Vlasov Antenna Attached to a
Coaxial MILO ....................................................................................... 27
Tables
Table 1. Dielectric Properties of Some HPM Plastics ............................................... 3
Table 2. Relative Spark Breakdown Strength of Gases ........................................... 5
Table 3. Cathode Study Findings .......................................................................... 11
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Report, from the dia collection. The PDF is mirrored here; the original link is under it. 37 pages are in the text index: search them above, or from the library's search.