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The Brillouin flow is the dominant flow in crossed-field devices. We systematically study its stability in conventional, planar, and inverted magnetron. We find that the negative mass effect in the inverted magnetron tends to destabilize the planar flow, and that the positive mass effect in the conventional magnetron tends to stabilize the planar flow. We find that the presence of a slow-wave structure,...
In a klystron, charge overtaking of electrons leads to an infinity of AC current. The harmonic content therein can be calculated exactly, with or without space charge effects. This paper extends the klystron theory to a traveling wave tube (TWT). We assume that the electron motion is described by linear theory. The crowding of these linear orbits may lead to harmonic generation, as in a klystron....
The Brillouin flow is the dominant flow in crossed-field devices. We systematically study its stability in conventional, planar, and inverted magnetron. We found that the negative mass effect in the inverted magnetron tends to destabilize the planar flow, and that the positive mass effect in the conventional magnetron tends to stabilize the planar flow.
We examine the Brillouin flow in the conventional magnetron, inverted magnetron, and planar magnetron, with respect to the equilibrium, stability, and operating conditions. This renewed interest was prompted by our recent invention of the recirculating planar magnetron (RPM), where rapid startup utilizes the negative mass instability in the inverted magnetron configuration. Given that Brillouin flow...
The recirculating planar magnetron (RPM) [1, 2] is a crossed-field device that combines the advantages of high-efficiency recirculating devices with those of planar devices: both large-area cathode (high current) and anode (improved thermal management). Preliminary experiments using the RPM-12a, the first L-band prototype, have successfully produced high power microwave pulses 50–300 ns in length...
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