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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.

  • p. 8 …Any electronics inside a completely sealed metallic container (Faraday cage) would have no vulnerability to HPM…
  • p. 10 …batch to batch than there is for metals. For this reason, the most demanding plastics applications…
  • p. 13 …holes, including the pores in metal tanks, eventually causing the metal to become brittle and fail…
  • p. 16 …When cathodes are made from metals with low work functions, there are problems with metal deposition…
  • 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. 19 …Csl-Carbon Fiber 2011.111111 -4 Tufts Metal I Ceramic 95 kV/cm (diode --- 8 collap…
  • p. 23 …High current densities in PCSS switches normally result in damage at the metal-semiconductor interface. Research…
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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.