Langmuir Wave Phase Velocity in Unneutralized Beams |
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Authors: | Godfrey Brendan B |
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Institution: | University of California Los Alamos Scientific Laboratory Los Alamos, New Mexico 87545; |
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Abstract: | We investigate the dispersion relation for long wavelength slow Langmuir waves in a relativistic particle beam propagating along a strong magnetic guide field in an evacuated metallic waveguide. For a large class of beam radial profiles, wave phase velocity drops to zero with infinite slope as beam current approaches the space-charge limit. This result is of importance to certain collective ion acceleration proposals. |
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