Title: STOCHASTIC ELECTRON TRAJECTORIES AND WAVE INTERACTION IN RELATIVISTIC GYRO-TRAVELING-WAVE AMPLIFIERS. Roland Ngogang, Master of Science, 2005 Directed By: Professor Victor L. Granatstein, Department of Electrical Engineering Gyro-traveling-wave amplifiers (gyro-TWAs) are types of gyrodevices, which take advantage of the cyclotron maser instability to produce coherent electromagnetic (EM)...

Abstract We analyze the undulator and gyro-synchrotron radiation of devices by equating number periods helical trajectory gyrating motion to periods. The gyro is characterized cyclotron resonance maser interaction exhibits superior line width quality but higher sensitive beam energy spread when operated at tera-hertz due finite larmor radius effects.

Abstract Efficient radiation at second and/or higher harmonics of Ω ce has been suggested to circumvent the escaping difficulty electron cyclotron maser emission mechanism when it is applied solar radio bursts, such as spikes. In our earlier study, we developed a three-step numerical scheme connect dynamics energetic electrons within large-scale coronal loop structure with microscale kinetic in...