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Defense Intelligence Reference Document Inertial Electrostatic Confinement Fusion

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This Defense Intelligence Agency reference document, dated 10 March 2010, covers inertial electrostatic confinement (IEC) fusion. It was produced in FY 2009 under the DIA's Advanced Aerospace Weapon System Applications (AAWSA) program. The report focuses on work at the University of Illinois Urbana-Champaign and reviews IEC basics, experiments, theory and applications such as neutron sources, explosives detection and space propulsion. It concludes by proposing a breakeven experiment for p-11B fusion that uses a hydrogen plasma simulation.

  • p. 8 …hence a good probability of fusing before being lost from the fusion reaction chamber. In the…
  • p. 11 …If it can, the device would be simpler and smaller than a Tokamak, making it an…
  • p. 14 …However, they showed that grid deformation could be very harmful. This deserves several comments. First, the…
  • p. 15 …Again, this issue will be addressed further later. While earlier workers sought small grid openings designed…
  • p. 17 …More insights will be provided throughout this report, but the reader is encouraged to study the…
  • p. 19 …Upscattering out of the well must be minimized while electron 12 UNCLASSIFIED//EOAt OFFIQI.«1k 11181…
  • p. 29 …It operates by convergence of ions created between the grid and wall onto a small volume…
  • p. 30 …Such thrusters, however, do not scale well to lower powers for small satellites, nor are exhaust…
  • p. 33 …first, the channel grid will be separately hinged with a small servo motor such that its…
  • p. 35 …Thus, the mass of the IEC jet thruster system can potentially be reduced compared to a…
  • p. 43 …More insight into this can be obtained from the distribution functions for trapped ions, sketched in…
  • p. 44 …The source to sink issue noted several times here can be explained as follows. Two opposite…
  • p. 47 …However, since the fusion core radius in these calculations is very small on the order of…
  • p. 49 …instability in finite spherical systems may be excited for small beam velocities compared to those of…
  • p. 50 …However, an experimental study should be performed to verify this result. RIDER - ENERGY BALANCE STUDY Todd…
  • p. 53 …In addition, since both D-D and D- 3He reactions can be used for proton production…
  • p. 54 …This can be viewed as a small scale soft source for individual laboratory studies such as…
  • p. 55 …The 14.1-MeV neutrons from the D-T reaction will be the primary source for…
  • p. 59 …Due to their small size, they can be used in a large array along with TOF…
  • p. 65 …If vis large compared to v11, the effective scattering angle will be large, resulting in retrapping…
  • p. 67 …Fortunately, the IEC can be scaled up in energy gain while keeping a small size since…
  • p. 68 …The small size of the IEC is a key characteristic. If rapid development is to be…
  • p. 71 …In other words, this could also be thought of as a Q=100 DT equivalent breakeven…
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In summary, if the physics principles
are demonstrated successfully, the
MCSA fusion power plant will offer
numerous advantages for space
propulsion as well as for terrestrial
power sources. The non-Maxwellian
plasma involved is well suited for
operation with D- 3He fuel that provides
much of the energy output in the form
of very energetic 14-MeV protons.
Proton energy can be employed for
either direct conversion to electricity or
directed thrust. As demonstrated in the
Fusion Ship II design study, the MCSA
power plant is especially well suited for
manned deep space missions where the
hid~..,;,,,
Entennla'
\
Figure 5.10. Diagram of Direction Randomization
(KAM effect) Due to the Magnetic Field Null Region
in the IEC
high power-to-weight of the MCSA enables fast trip times. The concept introduces
several important new physics. The basic concept of the MCSA system is use of
recirculation from escaping particles from one unit into the neighboring one where
retrapping occurs. These physical principles have not yet been demonstrated
experimentally, but formulated initial tests could be done with a modest size
experiment and stepped up in size to eventually demonstrate a full-scale prototype
power unit.
CONCLUDING REMARKS
This section has concentrated on various near-term "spin off" applications of
neutron/proton/x-ray sources and also non-electrical power applications such as space
propulsion. The homeland security inspection station described here show how versatile
the IEC concept is, allowing mufti-device broad area inspection. Space propulsion and
related space power seems quite far term due to the large size powers demanded for
such applications. However, the possibility of using magnetic coupling of smaller unit
provides a modular approach that has many advantages, plus expediting development
by allowing concentration on the smaller modules. In addition, use of near-tern
electrically driven IEC jet plasma devices allows a "product" along the way to the
eventual development of the high power fusion devices.
REFERENCES
5.1 G. H. Miley, L. Wu, H.J. Kim, Nuclear Techniques in National Security Studies on
Contraband Detections IEC-based neutron generator for security inspection system",
Journal of Radioanalytical and Nuclear Chemistry, Vol. 263, No. 1 (2005) pp.159-
164.
5.2 R. Burton, H. Momota, N. Richardson, Y. Shaban, and G. H. Miley, "Fusion Ship
59
II- A Fast Manned Interplanetary Space Vehicle Using Inertial Electrostatic Fusion",
Space Technology and Applications International Forum - STAIF-2003, Albuquerque,
NM, 654, Feb 2-5 (2003) (M.S. EI-Genk, ed.), American Institute of Physics Conf.
Proceedings, pp. 553-562.
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Report, from the dia collection. The PDF is mirrored here; the original link is under it. 72 pages are in the text index: search them above, or from the library's search.