Particle-in-cell simulations are performed to analyze<br>the role of secondary electron emission (SEE) on the<br>efficiency, the output power and the leakage currents of 12-cavity,<br>12-cathode Rising-Sun magnetrons with diffraction output. The<br>simulation results seem to indicate that the role of SEE would be<br>fairly negligible. Small changes are predicted, linked to deviations<br>in the starting trajectories of secondary electrons following their<br>generation and the lower fraction of electrons in clusters with a<br>synchronized rotational velocity. Overall, a peak power output<br>of about 2.48 GW is predicted at a magnetic field of 0.45 T, with<br>efficiencies as high as 75%. Furthermore, deviations in the output<br>power with SEE are predicted to occur at shorter times, but<br>would not be an issue for pulses greater than 25 ns in duration.
|Journal||Plasma Sources Science and Technology|
|State||Published - Mar 2016|