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Summary form only given. The CIDER two-dimensional hybrid code has been used to simulate high-power ion beam transport and focusing in the gas cell of a light ion beam accelerator, such as PBFA II (Particle Beam Fusion Accelerator II). The CIDER hybrid code treats the ions in the beam and in background plasma as particles, and the electrons as a collisional fluid. The simulation model includes important...
The general theory for the stability properties of relativistic Brillouin flow has been developed within the context of planar geometry and cross field propagation of the waves parallel to the equilibrium electron flow. Two important features are considered in the analytical model. They are (1) resistive plasma layers formed in the vicinity of the diode surfaces, and (2) ambient ion flow across the...
Recent experiments have demonstrated that the magnetron geometry can be adapted for gigawatt power production by short-pulse (≤1 µsec) operation at high voltages (>0.2 MeV) [1–3]. The high powers were achieved by using field emission diodes. The slow-wave structures in these magnetrons had relatively few cavities and an anode-cathode separation substantially smaller than the periodic spacing of...
Pulsed power diodes have recently been used to generate intense ion beams with power levels approaching 1.0 TW [1]. As discussed in the papers presented by Drs. Cooperstein and Mosher in this conference, these beams are being considered for driving inertial-confinement-fusion pellets. The characteristics of the ion beams that can be generated are important in determining their suitability for focussing,...
Microwaves have been backscattered from magnetized, intense, relativistic electron beams to produce high-power outputs at a frequency far above that of the incident radiation. Two phenomena have been studied: (1) reflection from a refractive-index discontinuity near the beam front, and (2) stimulated magneto-Raman scattering from plasmons in the body of the beam.
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