Klystron-frequency stabilization for a paramagnetic-resonance spectrometer

Abstract

The requirements for the frequency stability of a microwave oscillator for use in a paramagnetic-resonance spectrometer are discussed. A design for a frequency-stabilization system, which is based on developments by R. V. Pound, is presented. Tests show that the system has a short-time stability of better than one part in 10^8 and a long-time stability of one part in 10^7. These results are compared with the required frequency stability for paramagnetic-resonance experiments.