An Investigation of the Laminarity of Flow in a Magnetically Confined Electron Beam

The Current Distributions in a Velocity-Modulated Brillouin-Focused Electron Beam

“…1 ' 2 It is expected, therefore, that measurements made on the nearly ideal beam should agree well with predictions of the behavior of a Brillouin beam.…”

“…3 This work is very briefly reviewed in the Appendix. The purposes of this report are (1) to review the small-signal theory of the velocity modulation of ideal Brillouin beams, (2) to modify this theory for application to actual beams and compare its predictions with the small-signaal r-f current contours found in the velocity-modulated beam described, and (3) to describe ,,ialitatively the large-signal data obtained for fundamental and harmonic currents using the equipment described in the Appendix. Figure 1 is a sketch of the system to be analyzed.…”