Development of the High Vacuum Steady-State Orbitron MASER

The Orbitron MASER is a device which can be used to generate R.F. radiation. This device has been operated for many years as a gas filled pulsed device. This thesis describes a brief history, design and operation of several steady-state, hot cathode Orbitron MASER. It also touches on a pulsed Orbitron MASER and the effects the hot cathode has on the radial electric field profile. A detailed derivation of emission frequency, gain and saturation is given in Appendix.