AAWSAP DIRD, Inertial Electrostatic Confinement Fusion, March 2010

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.

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move to high power IEC operations which are non-electrical. Deep space propulsion is
used as an example.
SPACE PROPULSION
The IEC can be used for both near-term electrically driven thrusters for satellite
operations (using the jet mode discussed earlier) and for fusion-powered deep space
propulsion. The latter is illustrated in Reference 5.3 where a D-3He reactor was utilized .
This design concept is briefly summarized here.
Figure S.S. Image of a Fusion II Spaceship, a 7S0-MWe IEC Fusion-Powered Manned Spacecraft With
Ion Thruster Propulsion
The IEC Spaceship "Fusion Ship II" is shown in Figures 5.5 and 5.6. (Note: Fusion Ship
II represents an upgrade to high power of an earlier design termed "Fusion Ship I").
The overall spaceship length is 300 meters and the initial mass at mission start is 500
metric tons. Crew and avionics/computers are located in the central compartment at
the forward end of the veh icle. The crew compartment uses 12-m diameter chamber
and could contain a rotating centrifuge for sleep and exercise. A steerable antenna
located on the side of this module provides communication. Twin 175-meter long
assemblies, comprised of 5 D-3He spherical IEC reactors and Traveling Wave Direct
Energy Converters (TWDECs) each, generate 1394 MW of 14.7- MeV proton flux and
469-MW of thermal heat which is converted to 1197 MWe of RF electric power. 242 MW
of the electrical power, then, re-circulates to run the reactors while 750 MWe is used to
drive ion thrusters wh ile the remainder of the energy is rejected as waste heat. A fusion
fuel re-circulation and separation system is operated continuously to remove the fusion
product 4He from the D- 3He reactants. Any unburned fuel is co ll ected via the TWDEC
energy convertors and recirculated back to the IEC reactors. This conserves the
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