Development of the Resonant-Cavity Virtual-Cathode and Large-Orbit Gyrotron High-Power Microwave Sources Fazio, M. V. ; Destler, W. W. ; Hoeberling, R. F. ; Kinross-Wright, J. ; Stringfield, R. ; Vanhaaften, F. Abstract Publication: 1989 IEEE Particle Accelerator Conference Pub Date: 1989 Bibcode: 1989pac..conf.1134F