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Frequency stabilization of a klystron in a paramagnetic resonance spectrometer Rundle, Howard Norton

Abstract

A field modulation, paramagnetic resonance spectrometer in use as a wide band Instrument employs a reflex klystron. The frequency of the klystron has been stabilized to at least one part in one quarter million, over a period of a few hours, to the resonant frequency of a microwave cavity. A variation of the A.C. Pound stabilizing circuit was employed. With field stabilization, this frequency stabilization makes it possible to operate the spectrometer as a narrow band instrument, thereby increasing the overall sensitivity.

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