Recent experimental studies have revealed for the first time some basic features of pulsed, relativistic (300--600 kV) backward-wave oscillators such as starting current, axial mode locking, and multifrequency operation. Above a critical beam current a gradual degradation of the spectrum purity of the electromagnetic radiation is observed, culminating in the onset of stochastic oscillations.
No takes yet. Share an insight, caveat, or question.
Carmel et al. (1992) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: