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This Defense Intelligence Reference Document, dated 10 March 2010, was prepared by the Defense Intelligence Agency's Defense Warning Office under the Advanced Aerospace Weapon System Applications Program. It surveys the basics, experimental status, theory and possible uses of inertial electrostatic confinement (IEC) fusion, with emphasis on work at the University of Illinois Urbana-Champaign. It covers neutron sources, explosives detection and space propulsion. It ends by proposing a 12-gun hydrogen plasma experiment meant to show breakeven conditions for p-11B fuel.
From the source: Release of 2026-09-18 Incident: 3/10/10, Las Vegas, Nevada. Released with redactions. This document is a Defense Intelligence Reference Document (DIRD), a technical reference format used by the Defense Intelligence Agency (DIA) to capture baseline knowledge on a specific topic for later analytic use. DIRDs are best understood as reference and synthesis products rather than as original research. It is one of 38 DIRDs produced under the Advanced Aerospace Weapon System Applications Program (AAWSAP) between 2009 and 2011. Because AAWSAP’s scope permitted a broad range of supporting topics, not every DIRD in the series directly concerns aerospace systems or future threat assessment. The following summary reflects the DIRD’s scope and framing at the time of writing and should not be read as implying current validation of the concepts discussed. This DIRD surveys inertial electrostatic confinement (IEC) fusion, a relatively unconventional fusion concept that uses electric fields rather than the more established magnetic or laser-based approaches to confine ions, and it reviews both the underlying physics and the experimental work associated with the concept. The report emphasizes that IEC may have nearer-term value as a compact neutron, proton, or x-ray source and as a platform for studying experimental fusion approaches, while also presenting more ambitious possibilities such as aneutronic power generation and propulsion applications. At the same time, it makes clear that the concept remained far from practical fusion power, with experimental devices operating several orders of magnitude below breakeven and with major unresolved issues involving confinement, losses, grid damage, and scale-up. Overall, the document treats IEC as a technically interesting but still highly speculative path toward fusion energy, while suggesting that its more limited spin-off applications were more plausible in the near term than its long-range power generation or propulsion applications.
UNCLASSIFIED/ /FOR 8FFI@IAL ~81!! 9HLY the injected electrons so space charge neutralizatio111 can be achieved. This formalism is then included as a boundary condition in a gridless particle code. Results indicate that although the formalism works well during the early phases of compression, when the compression gets large the solution bifurcates and becomes unphysical. Subsequent experiments on POPS at Lawrence Livermore National Laboratory (LLNL) were encouraging, but have not been continued at a high level of effort due to key staff leaving for EMC2 . Thus, the practicality of this concept remains an open question which deserves more research. Miley's "Ion Injected" Device The key to developing a IEC power device is to use external ion "guns" to form and inj ect Ions into the spherical IEC chamber. This eliminates the need for a grid and differential pumping between the gun and chamber allows the high vacuum needed in the chamber. (Ion injection by external guns was originally used by Hirsch as already noted. Also, more recently other labs, e.g. the University of Wisconsin and University of Kyoto/Tokyo Institute of Technology, have started gun injection work. Some of that is described later in this report) . The ion formation is done in the high pressure gun discharge region outside of the chamber. Miley at UIUC (see Sections IV and VI) has been studying such a system, both theoretically and experimentally. The theoretical studies confirm that such an IEC plasma can exist stably and has sufficient confinement time for aneutronic fusion. This assumes, however, very precise control is maintained over the energy and angular momentum of injected ions and a balanced supply of electrons is provided. A radio-frequency (RF) ion injector (or "gun") capable of such operation has already been developed . A sketch of th is design is shown in Figure 1.5. magnetic focusing lens stainless steel flange ceramic (insulator) negative potential Q~ nbeam~t,,J;,l;~==;:;===l: positive wall, part of vacuum chamber ~ t:t,:==;=f=i=r"iF=;;:=l coaxial copper resonator: hollow cylindrical l upper plasma stream: floating D2 gas feed ~l=t'A'Ft,VtJil/1t:tl't~l=l:~l4..,._ lj magnetic differential coils helical antenna ! glass tube RF generator lower plasma stream: floating Figure 1.5. Schematic of the UIUC RF Gun Injector for IEC Experiments UNCLASSIFIED/ /FOA OFFI51Ak Wlili 0Plk¥ 11
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Official release, from the pursue collection. The PDF is mirrored here; the original link is above. 72 pages are in the text index: search them above, or from the library's search.