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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.
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UNCLASSIFIED/ ; t ;- :-- -r-"~ dV .:: _l I vi.,. - Real ~ ' > 0: ' cathode '~ '·-- 0 0.075 Radiu!\ \m I Figure 4.5. The Definition of the Double Well Depth: Double Well Depth [%] = -dV /Vtot x 100. The case shown assumes 30-keV injection. !EC cathode grid j ------- -- -- ' •', ' /~ '. ' ·~,vJ. \,, vt!:v _,:' ' , ' -- -.... - -... Figure 4.6. The Definition of the Parallel and Perpendicular Velocities at the IEC Cathode Grid The definition of angular momentum is also illustrated in Figure 4.6. In spherical geometry, the velocity component perpendicular to the radius axis represents the angular momentum. TZONEV ET AL. - DEEP WELL STUDY Tzonev et al. (Reference 4.4) used the IXL (ion accelerated code), a 1-D electrostatic Poisson-Vlasov equation solver for use in spherical geometry. IXL was originally developed by Mission Research Corporation for R.W. Bussard. The primary purpose of the code is to determine an electrostatic potential consistent with the dynamics of the charged particles within that same potential, and to determine the charged particle density distribution inside of the spherical cathode. While IXL neglects collisional effects, it still provides an important limiting case where space charge effects dominate. The boundary conditions for each particle population are characterized by five parameters: injected beam current, average injection energy, energy spread associated with the velocity component in both parallel and perpendicular directions, and the number of recirculations through the core. Tzonev et al. found that deep double electrostatic potential wells can occur at high ion and electron currents (30 A-60 A); high perpendicular ion energy spread (3 keV-14 keV); low perpendicular electron energy spread (3 eV), and low radial ion energy spread (0.1 eV-0.5 eV). An example is given in Figure 4.7. 39 UNCLASSIFIED/ ,era~ 8FFIIIAI:. ~:!II!! 8Hl:.Y
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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.